# Inject a message

This operation injects a conversation message in to a specific conversation.

Endpoint: POST /v1/projects/{project_id}/conversations/{conversation_id}:inject-message
Version: 1.0
Security: Basic, oAuth2

## Path parameters:

  - `project_id` (string, required)
    The unique ID of the project. You can find this on the Sinch Dashboard.

  - `conversation_id` (string, required)
    The ID of the conversation.

## Request fields (application/json):

  - `channel_identity` (object, required)
    A unique identity of message recipient on a particular channel.
For example, the channel identity on SMS, WHATSAPP or VIBERBM is a MSISDN phone number.

  - `channel_identity.identity` (string, required)
    The channel identity. This will differ from channel to channel. For example, a phone number for SMS, WhatsApp, and Viber Business.

  - `channel_identity.channel` (string, required)
    The identifier of the channel you want to include. Must be one of the enum values.
    Enum: "WHATSAPP", "RCS", "SMS", "MESSENGER", "VIBERBM", "MMS", "INSTAGRAM", "TELEGRAM", "KAKAOTALK", "KAKAOTALKCHAT", "LINE", "WECHAT", "APPLEBC"

  - `channel_identity.app_id` (string)
    Required if using a channel that uses app-scoped channel identities. Currently, FB Messenger, Instagram, LINE, and WeChat use app-scoped channel identities, which means contacts will have different channel identities on different Conversation API apps. These can be thought of as virtual identities that are app-specific and, therefore, the app_id must be included in the API call.

  - `contact_id` (string, required)
    The ID of the contact registered in the conversation provided.

  - `direction` (string, required)
    The direction of the message flow, indicating whether the message was sent to or from the Conversation API app.
    Enum: "TO_APP", "TO_CONTACT"

  - `accept_time` (string, required)
    The processed time of the message in UTC timezone. Must be less than current_time and greater than (current_time - 30 days)

  - `conversation_id` (string)
    The ID of the conversation.

  - `sender_id` (string)
    For Contact Messages (MO messages), the sender ID represents the recipient to which the message was sent. This may be a phone number (in the case of SMS and MMS) or a unique ID (in the case of WhatsApp). This is field is not supported on all channels, nor is it supported for MT messages.

  - `processing_mode` (string)
    Whether or not Conversation API should store contacts and conversations for the app. For more information, see [Processing Modes](https://developers.sinch.com/docs/conversation/processing-modes/).
    Enum: "CONVERSATION", "DISPATCH"

  - `metadata` (string)
    Optional. Metadata associated with the contact.
Up to 1024 characters long.

  - `body` (App Message to be injected (object) or Contact Message to be injected (object), required) — one of:
    - App Message to be injected:
      - `app_message` (object) — one of:
        A message originating from a Conversation API app
        - Card:
          - `card_message` (object)
            Message containing text, media and choices.
          - `card_message.choices` (array) — one of:
            You may include choices in your Card Message. The number of choices is limited to 10.
            - Call:
              - `call_message` (object)
              - `call_message.phone_number` (string, required)
                Phone number in E.164 with leading +.
                Example: "+15551231234"
              - `call_message.title` (string, required)
                Title shown close to the phone number.
The title is clickable in some cases.
                Example: "Message text"
            - Location:
              - `location_message` (object)
              - `location_message.coordinates` (object, required)
              - `location_message.coordinates.latitude` (number, required)
                The latitude.
              - `location_message.coordinates.longitude` (number, required)
                The longitude.
              - `location_message.title` (string, required)
                The title is shown close to the button or link that leads to a map showing the location. The title can be clickable in some cases.
              - `location_message.label` (string)
                Label or name for the position.
            - Text:
              - `text_message` (object)
              - `text_message.text` (string, required)
                The text to be sent.
            - URL:
              - `url_message` (object)
              - `url_message.title` (string, required)
                The title shown close to the URL. The title can be clickable in some cases.
              - `url_message.url` (string, required)
                The url to show.
            - Calendar:
              - `calendar_message` (object)
              - `calendar_message.title` (string, required)
                The title is shown close to the button that leads to open a user calendar.
              - `calendar_message.event_start` (string, required)
                The timestamp defines start of a calendar event.
                Example: "2025-11-30T10:00:00Z"
              - `calendar_message.event_end` (string, required)
                The timestamp defines end of a calendar event.
                Example: "2025-11-30T11:00:00Z"
              - `calendar_message.event_title` (string, required)
                Title of a calendar event.
              - `calendar_message.fallback_url` (string, required)
                The URL that is opened when the user cannot open a calendar event directly or channel does not have support for this type.
              - `calendar_message.event_description` (string)
                Description of a calendar event.
            - Request location:
              - `share_location_message` (object)
              - `share_location_message.title` (string, required)
                The title is shown close to the button that leads to open a map to share a location.
              - `share_location_message.fallback_url` (string, required)
                The URL that is opened when channel does not have support for this type.
          - `card_message.choices.postback_data` (any)
            An optional field. This data will be returned in the ChoiceResponseMessage. The default is message_id_{text, title}.
          - `card_message.choices.display_mode` (string)
            Controls the display behavior of a choice.
            Enum: "DISPLAY_MODE_UNSPECIFIED", "PERSISTENT"
          - `card_message.description` (string)
            This is an optional description field that is displayed below the title on the card.
          - `card_message.height` (string)
            You can set the desired size of the card in the message.
            Enum: "UNSPECIFIED_HEIGHT", "SHORT", "MEDIUM", "TALL"
          - `card_message.title` (string)
            The title of the card message.
          - `card_message.media_message` (object)
            A message containing a media component.
          - `card_message.media_message.url` (string, required)
            Url to the media file.
          - `card_message.media_message.thumbnail_url` (string)
            An optional parameter. Will be used where it is natively supported.
          - `card_message.media_message.filename_override` (string)
            Overrides the media file name.
          - `card_message.message_properties` (object)
            Optional additional properties.
          - `card_message.message_properties.whatsapp_header` (string)
            Optional. Sets the header for the footer of a WhatsApp reply button message, if there is no media in the message. Ignored for other channels. Ignored if not transcoded to a native WhatsApp message with reply buttons.
        - Carousel:
          - `carousel_message` (object)
          - `carousel_message.cards` (array, required)
            A list of up to 10 cards.
          - `carousel_message.cards.choices` (array) — one of:
            You may include choices in your Card Message. The number of choices is limited to 10.
            - Call:
              - `call_message` (object)
              - `call_message.phone_number` (string, required)
                Phone number in E.164 with leading +.
                Example: "+15551231234"
              - `call_message.title` (string, required)
                Title shown close to the phone number.
The title is clickable in some cases.
                Example: "Message text"
            - Location:
              - `location_message` (object)
              - `location_message.coordinates` (object, required)
              - `location_message.coordinates.latitude` (number, required)
                The latitude.
              - `location_message.coordinates.longitude` (number, required)
                The longitude.
              - `location_message.title` (string, required)
                The title is shown close to the button or link that leads to a map showing the location. The title can be clickable in some cases.
              - `location_message.label` (string)
                Label or name for the position.
            - Text:
              - `text_message` (object)
              - `text_message.text` (string, required)
                The text to be sent.
            - URL:
              - `url_message` (object)
              - `url_message.title` (string, required)
                The title shown close to the URL. The title can be clickable in some cases.
              - `url_message.url` (string, required)
                The url to show.
            - Calendar:
              - `calendar_message` (object)
              - `calendar_message.title` (string, required)
                The title is shown close to the button that leads to open a user calendar.
              - `calendar_message.event_start` (string, required)
                The timestamp defines start of a calendar event.
                Example: "2025-11-30T10:00:00Z"
              - `calendar_message.event_end` (string, required)
                The timestamp defines end of a calendar event.
                Example: "2025-11-30T11:00:00Z"
              - `calendar_message.event_title` (string, required)
                Title of a calendar event.
              - `calendar_message.fallback_url` (string, required)
                The URL that is opened when the user cannot open a calendar event directly or channel does not have support for this type.
              - `calendar_message.event_description` (string)
                Description of a calendar event.
            - Request location:
              - `share_location_message` (object)
              - `share_location_message.title` (string, required)
                The title is shown close to the button that leads to open a map to share a location.
              - `share_location_message.fallback_url` (string, required)
                The URL that is opened when channel does not have support for this type.
          - `carousel_message.cards.choices.postback_data` (any)
            An optional field. This data will be returned in the ChoiceResponseMessage. The default is message_id_{text, title}.
          - `carousel_message.cards.choices.display_mode` (string)
            Controls the display behavior of a choice.
            Enum: same as `card_message.choices.display_mode` in "Card" (2 values)
          - `carousel_message.cards.description` (string)
            This is an optional description field that is displayed below the title on the card.
          - `carousel_message.cards.height` (string)
            You can set the desired size of the card in the message.
            Enum: same as `card_message.height` in "Card" (4 values)
          - `carousel_message.cards.title` (string)
            The title of the card message.
          - `carousel_message.cards.media_message` (object)
            A message containing a media component.
          - `carousel_message.cards.media_message.url` (string, required)
            Url to the media file.
          - `carousel_message.cards.media_message.thumbnail_url` (string)
            An optional parameter. Will be used where it is natively supported.
          - `carousel_message.cards.media_message.filename_override` (string)
            Overrides the media file name.
          - `carousel_message.cards.message_properties` (object)
            Optional additional properties.
          - `carousel_message.cards.message_properties.whatsapp_header` (string)
            Optional. Sets the header for the footer of a WhatsApp reply button message, if there is no media in the message. Ignored for other channels. Ignored if not transcoded to a native WhatsApp message with reply buttons.
          - `carousel_message.choices` (array) — one of:
            Optional. Outer choices on the carousel level. The number of outer choices is limited to 3.
            - Call:
              - `call_message` (object)
              - `call_message.phone_number` (string, required)
                Phone number in E.164 with leading +.
                Example: "+15551231234"
              - `call_message.title` (string, required)
                Title shown close to the phone number.
The title is clickable in some cases.
                Example: "Message text"
            - Location:
              - `location_message` (object)
              - `location_message.coordinates` (object, required)
              - `location_message.coordinates.latitude` (number, required)
                The latitude.
              - `location_message.coordinates.longitude` (number, required)
                The longitude.
              - `location_message.title` (string, required)
                The title is shown close to the button or link that leads to a map showing the location. The title can be clickable in some cases.
              - `location_message.label` (string)
                Label or name for the position.
            - Text:
              - `text_message` (object)
              - `text_message.text` (string, required)
                The text to be sent.
            - URL:
              - `url_message` (object)
              - `url_message.title` (string, required)
                The title shown close to the URL. The title can be clickable in some cases.
              - `url_message.url` (string, required)
                The url to show.
            - Calendar:
              - `calendar_message` (object)
              - `calendar_message.title` (string, required)
                The title is shown close to the button that leads to open a user calendar.
              - `calendar_message.event_start` (string, required)
                The timestamp defines start of a calendar event.
                Example: "2025-11-30T10:00:00Z"
              - `calendar_message.event_end` (string, required)
                The timestamp defines end of a calendar event.
                Example: "2025-11-30T11:00:00Z"
              - `calendar_message.event_title` (string, required)
                Title of a calendar event.
              - `calendar_message.fallback_url` (string, required)
                The URL that is opened when the user cannot open a calendar event directly or channel does not have support for this type.
              - `calendar_message.event_description` (string)
                Description of a calendar event.
            - Request location:
              - `share_location_message` (object)
              - `share_location_message.title` (string, required)
                The title is shown close to the button that leads to open a map to share a location.
              - `share_location_message.fallback_url` (string, required)
                The URL that is opened when channel does not have support for this type.
        - Choice:
          - `choice_message` (object)
            A message containing choices.
          - `choice_message.choices` (array, required) — one of:
            The number of choices is limited to 10.
            - Call:
              - `call_message` (object)
              - `call_message.phone_number` (string, required)
                Phone number in E.164 with leading +.
                Example: "+15551231234"
              - `call_message.title` (string, required)
                Title shown close to the phone number.
The title is clickable in some cases.
                Example: "Message text"
            - Location:
              - `location_message` (object)
              - `location_message.coordinates` (object, required)
              - `location_message.coordinates.latitude` (number, required)
                The latitude.
              - `location_message.coordinates.longitude` (number, required)
                The longitude.
              - `location_message.title` (string, required)
                The title is shown close to the button or link that leads to a map showing the location. The title can be clickable in some cases.
              - `location_message.label` (string)
                Label or name for the position.
            - Text:
              - `text_message` (object)
              - `text_message.text` (string, required)
                The text to be sent.
            - URL:
              - `url_message` (object)
              - `url_message.title` (string, required)
                The title shown close to the URL. The title can be clickable in some cases.
              - `url_message.url` (string, required)
                The url to show.
            - Calendar:
              - `calendar_message` (object)
              - `calendar_message.title` (string, required)
                The title is shown close to the button that leads to open a user calendar.
              - `calendar_message.event_start` (string, required)
                The timestamp defines start of a calendar event.
                Example: "2025-11-30T10:00:00Z"
              - `calendar_message.event_end` (string, required)
                The timestamp defines end of a calendar event.
                Example: "2025-11-30T11:00:00Z"
              - `calendar_message.event_title` (string, required)
                Title of a calendar event.
              - `calendar_message.fallback_url` (string, required)
                The URL that is opened when the user cannot open a calendar event directly or channel does not have support for this type.
              - `calendar_message.event_description` (string)
                Description of a calendar event.
            - Request location:
              - `share_location_message` (object)
              - `share_location_message.title` (string, required)
                The title is shown close to the button that leads to open a map to share a location.
              - `share_location_message.fallback_url` (string, required)
                The URL that is opened when channel does not have support for this type.
          - `choice_message.choices.postback_data` (any)
            An optional field. This data will be returned in the ChoiceResponseMessage. The default is message_id_{text, title}.
          - `choice_message.choices.display_mode` (string)
            Controls the display behavior of a choice.
            Enum: same as `card_message.choices.display_mode` in "Card" (2 values)
          - `choice_message.text_message` (object)
          - `choice_message.text_message.text` (string, required)
            The text to be sent.
          - `choice_message.message_properties` (object)
          - `choice_message.message_properties.whatsapp_footer` (string)
            Optional. Sets the text for the footer of a WhatsApp reply button or URL button message. Ignored for other channels.
        - Location:
          - `location_message` (object)
          - `location_message.coordinates` (object, required)
          - `location_message.coordinates.latitude` (number, required)
            The latitude.
          - `location_message.coordinates.longitude` (number, required)
            The longitude.
          - `location_message.title` (string, required)
            The title is shown close to the button or link that leads to a map showing the location. The title can be clickable in some cases.
          - `location_message.label` (string)
            Label or name for the position.
        - Media Message:
          - `media_message` (object)
          - `media_message.url` (string, required)
            Url to the media file.
          - `media_message.thumbnail_url` (string)
            An optional parameter. Will be used where it is natively supported.
          - `media_message.filename_override` (string)
            Overrides the media file name.
        - Template Message:
          - `template_message` (object)
          - `template_message.channel_template` (object)
            Optional. Channel specific template reference with parameters per channel.
The channel template if exists overrides the omnichannel template.
At least one of channel_template or omni_template needs to be present.
The key in the map must point to a valid conversation channel as
defined by the enum ConversationChannel.
          - `template_message.omni_template` (object)
            The referenced template can be an omnichannel template stored in Conversation API Template Store as an AppMessage. You may also reference external channel-specific templates, such as a WhatsApp Business Template. Note that channel-specific template references are not supported when populating the explicit_channel_omni_message field.
          - `template_message.omni_template.version` (string, required)
            Used to specify what version of a template to use. Required when using omni_channel_override and omni_template fields.
This will be used in conjunction with language_code. Note that, when referencing omni-channel templates using the [Sinch Customer Dashboard](https://dashboard.sinch.com/), the latest version of a given omni-template can be identified by populating this field with latest.
          - `template_message.omni_template.template_id` (string, required)
            The ID of the template. Note that, in the case of WhatsApp channel-specific templates, this field must be populated by the name of the template.
          - `template_message.omni_template.language_code` (string)
            The BCP-47 language code, such as en_US or sr_Latn.
For more information, see http://www.unicode.org/reports/tr35/#Unicode_locale_identifier. English is the default language_code.
Note that, while many API calls involving templates accept either the dashed format (en-US) or the underscored format (en_US), some channel specific templates (for example, WhatsApp channel-specific templates) only accept the underscored format. Note that this field is required for WhatsApp channel-specific templates.
          - `template_message.omni_template.parameters` (object)
            Required if the template has parameters. Concrete values must
be present for all defined parameters
in the template. Parameters can be different for
different versions and/or languages of the template.
        - Text:
          - `text_message` (object)
          - `text_message.text` (string, required)
            The text to be sent.
        - List:
          - `list_message` (object)
          - `list_message.title` (string, required)
            A title for the message that is displayed near the products or choices.
          - `list_message.sections` (array, required)
            List of ListSection objects containing choices to be presented in the list message.
          - `list_message.sections.items` (array, required) — one of:
            - Choice:
              - `choice` (object, required)
                A message component for interactive messages, containing a choice.
              - `choice.title` (string, required)
                Required parameter. Title for the choice item.
              - `choice.description` (string)
                Optional parameter. The description (or subtitle) of this choice item.
              - `choice.media` (object)
                Optional parameter. The media of this choice item.
              - `choice.media.url` (string, required)
                Url to the media file.
              - `choice.media.thumbnail_url` (string)
                An optional parameter. Will be used where it is natively supported.
              - `choice.media.filename_override` (string)
                Overrides the media file name.
              - `choice.postback_data` (string)
                Optional parameter. Postback data that will be returned in the MO if the user selects this option.
            - Product:
              - `product` (object, required)
                A message component for interactive messages, containing a product.
              - `product.id` (string, required)
                Required parameter. The ID for the product.
              - `product.marketplace` (string, required)
                Required parameter. The marketplace to which the product belongs.
                Example: "FACEBOOK"
              - `product.quantity` (integer)
                Output only. The quantity of the chosen product.
              - `product.item_price` (number)
                Output only. The price for one unit of the chosen product.
              - `product.currency` (string)
                Output only. The currency of the item_price.
          - `list_message.sections.title` (string)
            Optional parameter. Title for list section.
          - `list_message.description` (string)
            This is an optional field, containing a description for the message.
          - `list_message.media` (object)
          - `list_message.media.url` (string, required)
            Url to the media file.
          - `list_message.media.thumbnail_url` (string)
            An optional parameter. Will be used where it is natively supported.
          - `list_message.media.filename_override` (string)
            Overrides the media file name.
          - `list_message.message_properties` (object)
            Additional properties for the message. Required if sending a product list message.
          - `list_message.message_properties.catalog_id` (string)
            Required if sending a product list message. The ID of the catalog to which the products belong.
          - `list_message.message_properties.menu` (string)
            Optional. Sets the text for the menu of a choice list message.
          - `list_message.message_properties.whatsapp_header` (string)
            Optional. Sets the text for the header of a WhatsApp choice list message. Ignored for other channels.
        - Contact Info:
          - `contact_info_message` (object)
          - `contact_info_message.name` (object, required)
            Name information of the contact.
          - `contact_info_message.name.full_name` (string, required)
            Full name of the contact
          - `contact_info_message.name.first_name` (string)
            First name.
          - `contact_info_message.name.last_name` (string)
            Last name.
          - `contact_info_message.name.middle_name` (string)
            Middle name.
          - `contact_info_message.name.prefix` (string)
            Prefix before the name. e.g. Mr, Mrs, Dr etc.
          - `contact_info_message.name.suffix` (string)
            Suffix after the name.
          - `contact_info_message.phone_numbers` (array, required)
            Phone numbers of the contact
          - `contact_info_message.phone_numbers.phone_number` (string, required)
            Phone number with country code included.
          - `contact_info_message.phone_numbers.type` (string)
            Phone number type, e.g. WORK or HOME.
          - `contact_info_message.addresses` (array)
            Physical addresses of the contact
          - `contact_info_message.addresses.city` (string)
            City Name
          - `contact_info_message.addresses.country` (string)
            Country Name
          - `contact_info_message.addresses.state` (string)
            Name of a state or region of a country.
          - `contact_info_message.addresses.zip` (string)
            Zip/postal code
          - `contact_info_message.addresses.type` (string)
            Address type, e.g. WORK or HOME
          - `contact_info_message.addresses.country_code` (string)
            Two letter country code.
          - `contact_info_message.email_addresses` (array)
            Email addresses of the contact
          - `contact_info_message.email_addresses.email_address` (string, required)
            Email address.
          - `contact_info_message.email_addresses.type` (string)
            Email address type. e.g. WORK or HOME.
          - `contact_info_message.organization` (object)
            Organization information of the contact.
          - `contact_info_message.organization.company` (string)
            Company name
          - `contact_info_message.organization.department` (string)
            Department at the company
          - `contact_info_message.organization.title` (string)
            Corporate title, e.g. Software engineer
          - `contact_info_message.urls` (array)
            URLs/websites associated with the contact
          - `contact_info_message.urls.url` (string, required)
            The URL to be referenced
          - `contact_info_message.urls.type` (string)
            Optional. URL type, e.g. Org or Social
          - `contact_info_message.birthday` (string)
            Date of birth in YYYY-MM-DD format.
      - `app_message.explicit_channel_message` (object)
        Allows you to specify a channel and define a corresponding channel specific message payload that will override the standard Conversation API message types. The key in the map must point to a valid conversation channel as defined in the enum ConversationChannel. The message content must be provided in a string format. You may use the [transcoding endpoint](https://developers.sinch.com/docs/conversation/api-reference/conversation/tag/Transcoding/) to help create your message. For more information about how to construct an explicit channel message for a particular channel, see that [channel's corresponding documentation](https://developers.sinch.com/docs/conversation/channel-support/) (for example, using explicit channel messages with [the WhatsApp channel](https://developers.sinch.com/docs/conversation/channel-support/whatsapp/message-support/#explicit-channel-messages)).
      - `app_message.explicit_channel_omni_message` (object)
        Override the message's content for specified channels. The key in the map must point to a valid conversation channel as defined in the enum ConversationChannel. The content defined under the specified channel will be sent on that channel.
      - `app_message.channel_specific_message` (object)
        Channel specific messages, overriding any transcoding. The structure of this property is more well-defined than the open structure of the explicit_channel_message property, and may be easier to use.
The key in the map must point to a valid conversation channel as defined in the enum ConversationChannel.
      - `app_message.agent` (object)
        Represents an agent that is involved in a conversation.
      - `app_message.agent.display_name` (string)
        Agent's display name
      - `app_message.agent.type` (string)
        Agent's classification. It can be UNKNOWN_AGENT_TYPE, HUMAN or BOT.
        Enum: "UNKNOWN_AGENT_TYPE", "HUMAN", "BOT"
      - `app_message.agent.picture_url` (string)
        The Agent's picture url.
    - Contact Message to be injected:
      - `contact_message` (object) — one of:
        A message originating from a contact.
        - Channel Specific Message:
          - `channel_specific_message` (object)
            Example: {"nfm_reply":{"summary":"WhatsApp NFM Reply Channel Specific Contact Message Example","value":{"channel_specific_message":{"message_type":"nfm_reply","message":{"type":"nfm_reply","nfm_reply":{"name":"flow","response_json":"{\"flow_token\": \"<FLOW_TOKEN>\", \"optional_param1\": \"<value1>\", \"optional_param2\": \"<value2>\"}","body":"Sent"}}}}}}
          - `channel_specific_message.message_type` (string)
            The message type.
            Enum: "nfm_reply"
          - `channel_specific_message.message` (any)
            The message content.
            - `type` (string, required)
              The interactive message type.
              Enum: same as `channel_specific_message.message_type` in "Channel Specific Message" (1 values)
            - `nfm_reply` (object, required)
              The interactive nfm reply message.
            - `nfm_reply.name` (string, required)
              The nfm reply message type.
              Enum: "flow", "address_message"
            - `nfm_reply.response_json` (string, required)
              The JSON specific data.
            - `nfm_reply.body` (string, required)
              The message body.
        - Choice Response:
          - `choice_response_message` (object)
          - `choice_response_message.message_id` (string, required)
            The message id containing the choice.
          - `choice_response_message.postback_data` (string, required)
            The postback_data defined in the selected choice.
        - Fallback:
          - `fallback_message` (object)
          - `fallback_message.raw_message` (string)
            Optional. The raw fallback message if provided by the channel.
          - `fallback_message.reason` (object)
          - `fallback_message.reason.code` (string)
            Enum: "UNKNOWN", "INTERNAL_ERROR", "RATE_LIMITED", "RECIPIENT_INVALID_CHANNEL_IDENTITY", "RECIPIENT_NOT_REACHABLE", "RECIPIENT_NOT_OPTED_IN", "OUTSIDE_ALLOWED_SENDING_WINDOW", "CHANNEL_FAILURE", "CHANNEL_BAD_CONFIGURATION", "CHANNEL_CONFIGURATION_MISSING", "MEDIA_TYPE_UNSUPPORTED", "MEDIA_TOO_LARGE", "MEDIA_NOT_REACHABLE", "NO_CHANNELS_LEFT", "TEMPLATE_NOT_FOUND", "TEMPLATE_INSUFFICIENT_PARAMETERS", "TEMPLATE_NON_EXISTING_LANGUAGE_OR_VERSION", "DELIVERY_TIMED_OUT", "DELIVERY_REJECTED_DUE_TO_POLICY", "CONTACT_NOT_FOUND", "BAD_REQUEST", "UNKNOWN_APP", "NO_CHANNEL_IDENTITY_FOR_CONTACT", "CHANNEL_REJECT", "NO_PERMISSION", "NO_PROFILE_AVAILABLE", "UNSUPPORTED_OPERATION"
          - `fallback_message.reason.description` (string)
            A textual description of the reason.
          - `fallback_message.reason.sub_code` (string)
            Enum: "UNSPECIFIED_SUB_CODE", "ATTACHMENT_REJECTED", "MEDIA_TYPE_UNDETERMINED", "INACTIVE_SENDER"
          - `fallback_message.reason.channel_code` (string)
            Error code forwarded directly from the channel. Useful in case of unmapped or channel specific errors. Currently only supported on the WhatsApp channel.
        - Location:
          - `location_message` (object)
          - `location_message.coordinates` (object, required)
          - `location_message.coordinates.latitude` (number, required)
            The latitude.
          - `location_message.coordinates.longitude` (number, required)
            The longitude.
          - `location_message.title` (string, required)
            The title is shown close to the button or link that leads to a map showing the location. The title can be clickable in some cases.
          - `location_message.label` (string)
            Label or name for the position.
        - Media Card:
          - `media_card_message` (object)
          - `media_card_message.url` (string, required)
            Url to the media file.
          - `media_card_message.caption` (string)
            Caption for the media on supported channels.
        - Media Message:
          - `media_message` (object)
          - `media_message.url` (string, required)
            Url to the media file.
          - `media_message.thumbnail_url` (string)
            An optional parameter. Will be used where it is natively supported.
          - `media_message.filename_override` (string)
            Overrides the media file name.
        - Product Response Message:
          - `product_response_message` (object)
          - `product_response_message.products` (array)
            The selected products.
          - `product_response_message.products.id` (string, required)
            Required parameter. The ID for the product.
          - `product_response_message.products.marketplace` (string, required)
            Required parameter. The marketplace to which the product belongs.
            Example: "FACEBOOK"
          - `product_response_message.products.quantity` (integer)
            Output only. The quantity of the chosen product.
          - `product_response_message.products.item_price` (number)
            Output only. The price for one unit of the chosen product.
          - `product_response_message.products.currency` (string)
            Output only. The currency of the item_price.
          - `product_response_message.title` (string)
            Optional parameter. Text that may be sent with selected products.
          - `product_response_message.catalog_id` (string)
            Optional parameter. The catalog id that the selected products belong to.
        - Text:
          - `text_message` (object)
          - `text_message.text` (string, required)
            The text to be sent.
      - `contact_message.reply_to` (object)
      - `contact_message.reply_to.message_id` (string, required)
        Required. The Id of the message that this is a response to

## Response 400 fields (application/json):

  - `error` (object)

  - `error.code` (integer)

  - `error.details` (array)

  - `error.details.type_url` (string)

  - `error.details.value` (string)

  - `error.message` (string)

  - `error.status` (string)


## Response 200 fields