5.2.2 Programming Services without a Response

Service programs that do not send replies back to the requester execute using transactions started by the EXEC CICS START command. The FROM option of this command contains a pointer to the raw data; therefore, no header is sent. As a result, such service programs must use an EXEC CICS RETRIEVE command with the SET option containing a pointer to the raw data.

Note:

Define a unique transaction for each service that does not send a reply and enter the name of that transaction in the TRANSACTION NAME field of the Inbound Service Information screen for the corresponding service.

An example of a service sending no reply is one requested by a client using a tpacall with the TPNOREPLY flag set.