z/OS User Exits › z/OS Middleware User Exits – WebSphere MQ CICS › WebSphere MQ Transaction Dispatcher for CICS (TDC) Exit › TIRMQTDX—WebSphere MQ Transaction Dispatcher for CICS Parameter Exit

TIRMQTDX—WebSphere MQ Transaction Dispatcher for CICS Parameter Exit

The Parameter Exit for the CA Gen WebSphere MQ Transaction Dispatcher for CICS (TDC) option is used by z/OS WebSphere MQ servers.

For each trigger event that initiates the TDC, the TDC sends a copy of the parameter list to the TDX (TIRMQTDX) in the DFHCOMMAREA. The TDX sends the list back to the TDC including any parameter modifications programmed into the TDX. The TDC accepts the parameter list without checking for invalid entries.

Note: The TDX is responsible for validating any parameter changes. If you change the default behavior of the exit, ensure that it passes a correct parameter, because the TDC does not validate parameters it receives from the TDX.