Invalid sender ID
A valid Sender ID is required to send messages. An invalid Sender ID error can occur due to using a Sender ID that has not been assigned to your account or misspelling an existing Sender ID. Sender IDs are case insensitive.
Status code: 404
{
"success": false,
"message": "Unrecognized sender id. Sender ID test is not assigned an account",
"recipients": null
}
In case the Sender ID is not included in the request. The response will include the following error.
Status code: 400
{
"success": false,
"message": "Source (sender id) is not defined",
"recipients": null
}