Optionallanguage_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.
OptionalparametersRequired 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.
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.
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, the latest version of a given omni-template can be identified by populating this field with latest.
The referenced template can be an omnichannel template stored in Conversation API Template Store as AppMessage or it can reference external channel-specific template such as WhatsApp Business Template.