PRCID (24-byte bit string)

Correlation identifier.

This is the correlation identifier to be used for the message sent to the queue whose name was specified by the corresponding element in the array of MQOR structures provided on the MQOPEN or MQPUT1 call. It is processed in the same way as the MDCID field in MQMD for a put to a single queue.

If this field is not present in the MQPMR record, or there are fewer MQPMR records than destinations, the value in MQMD is used for those destinations that do not have an MQPMR record containing a PRCID field.

If PMNCID is specified, a single new correlation identifier is generated and used for all of the destinations in the distribution list, regardless of whether they have MQPMR records. This is different from the way that PMNMID is processed (see PRMID field).

This is an input/output field.