Changes to Send a long code message

added the new optional header request parameter Idempotency-Key

added the non-success response with the status 409

added the non-success response with the status 413

added the non-success response with the status 503

added the new WHATSAPP enum value to the data/type response property for the response status 200

added the optional property data/template_id to the response with the 200 status

added the optional property data/template_name to the response with the 200 status

added the new RCS enum value to the data/type response property for the response status 200

added the new read enum value to the data/to/items/status response property for the response status 200

added the optional property data/body to the response with the 200 status

added the optional property data/from/agent_id to the response with the 200 status

added the optional property data/from/agent_name to the response with the 200 status

the response's body type changed from object to no type for status 4XX

the errors/items response's property type changed from object to no type for status 4XX

the errors/items/code response's property type changed from integer to string, and format from int32 to no format for status 4XX

the response's body type changed from no type to object for status 4XX

the errors/items response's property type changed from no type to object for status 4XX

the errors/items/code response's property type changed from string to integer, and format from no format to int32 for status 4XX

the errors/items/source/pointer response's property format changed from json-pointer to no format for status 4XX