Response codes are returned by Services to indicate the success or failure of the Call. They should be tested by the application to determine what course of action to take.

The Response Code parameter used by Services is either a 20-byte format or a 2-byte format, depending on the Service. The 20-byte format is considered the "full" response code. Check the appropriate Service chapter to see which format a Service uses in its parameter list.

For those Services which use the 2-byte format in the parameter list, access to the full 20-byte response code is in the Work-area parameter at offset 42.

The full response code is divided into two 10-byte fields called the Primary response code and the Secondary response code.