How to use callback function with plsql_rest_sender_api.call_rest_endpoint?

Hi,

I’m currently facing a similar issue. I’ve defined my own callback function to log the response in a custom table:

PROCEDURE Response_Callback_Function(xml_ CLOB, app_msg_id_ VARCHAR2, key_ref_ VARCHAR2, fnd_user_ VARCHAR2)
IS
   objid_ VARCHAR2(2000);
   objversion_ VARCHAR2(2000);

   -- Cursor to get Correlation record obj data
   CURSOR Get_Obj(app_message_id_ VARCHAR2) IS
   SELECT objid, objversion
   FROM c_correlation_log
   WHERE app_message_id = app_message_id_;

BEGIN

   -- Modify Correlation Log record to add response
	OPEN Get_Obj(app_msg_id_);
	FETCH Get_Obj INTO objid_,objversion_;
	CLOSE Get_Obj;

   C_Correlation_Log_API.Write_Response_Payload__(objversion_,objid_,xml_);
   @ApproveTransactionStatement(2025-01-14,Manuel Toca)
	COMMIT; 

END Response_Callback_Function;

Here is how I’m calling this callback function in the asynchronous Rest call:

Plsql_Rest_Sender_API.Call_Rest_Endpoint_Json(rest_service_ => 'C_Task_Status_Change',
                                                      json_ => json_,
                                                      message_id_ => message_id_,
                                                      key_ref_ => key_ref_,
                                                      fnd_user_ => 'IFSAPP',
                                                      callback_func_ => 'C_Outbound_Util_API.Response_Callback_Function',
                                                      http_method_  => 'POST',
                                                      http_req_headers_ => http_req_headers_,
                                                      sender_ => 'IFSAPP',
                                                      receiver_     => 'StatusChange',
                                                      message_type_ => 'APPLICATION_MESSAGE', 
                                                      subject_ => 'StatusChanged');

However, it doesn’t seem like it’s triggering the callback function at all; I don’t see the response logged in our custom table nor do I see that the callback execution log from the Application Messages.

Can someone let me know if I missed anything? Thanks.