# Get TFN Verification use cases

Get a list of valid use cases for creating TFN Verifications

Endpoint: GET /v1/projects/{projectId}/tfnVerification/useCases
Version: 1.0
Security: BasicAuth, OAuth2

## Path parameters:

  - `projectId` (string, required)
    Sinch uses projects to group resources such as contacts and apps together to manage and connect a unique set of keys and secret IDs for all your Sinch API products. To identify a project, it is given a unique alphanumeric identifier that ties it to your account. Your project ID can be found in the Customer Dashboard.

## Response 200 fields (application/json):

  - `useCases` (array)

## Response 400 fields (application/json):

  - `error` (object, required)

  - `error.code` (integer, required)
    The error code.
    Example: 400

  - `error.message` (string, required)
    The error message.
    Example: "Invalid argument."

  - `error.status` (string)
    The status of the error.
    Example: "INVALID_ARGUMENT"

  - `error.details` (array)
    An array of objects describing the error in more detail, if applicable.

  - `error.details.type` (string)
    A more specific description of the error.
    Example: "BadRequest"

  - `error.details.resourceType` (string)
    The type of resource relevant to the error, if applicable.

  - `error.details.resourceName` (string)
    The name of the resource, if applicable.

  - `error.details.owner` (string)
    The owner of the resource, if applicable.

  - `error.details.description` (string)
    A description of the error, if applicable.

  - `error.details.fieldViolations` (array)
    An array of all the field violations which contributed to the error.

  - `error.details.fieldViolations.field` (string)
    The field which produced the error.
    Example: "order_by"

  - `error.details.fieldViolations.description` (string)
    The description of the error.
    Example: "Invalid `order_by` number."

## Response 429 fields (application/json):

  - `error` (object, required)

  - `error.code` (integer, required)
    The error code.
    Example: 400

  - `error.message` (string, required)
    The error message.
    Example: "Invalid argument."

  - `error.status` (string)
    The status of the error.
    Example: "INVALID_ARGUMENT"

  - `error.details` (array)
    An array of objects describing the error in more detail, if applicable.

  - `error.details.type` (string)
    A more specific description of the error.
    Example: "BadRequest"

  - `error.details.resourceType` (string)
    The type of resource relevant to the error, if applicable.

  - `error.details.resourceName` (string)
    The name of the resource, if applicable.

  - `error.details.owner` (string)
    The owner of the resource, if applicable.

  - `error.details.description` (string)
    A description of the error, if applicable.

  - `error.details.fieldViolations` (array)
    An array of all the field violations which contributed to the error.

  - `error.details.fieldViolations.field` (string)
    The field which produced the error.
    Example: "order_by"

  - `error.details.fieldViolations.description` (string)
    The description of the error.
    Example: "Invalid `order_by` number."