Messages sent by a test MHP can be invalidated, allowing the MHP to be tested without affecting online jobs.

This facility invalidates messages sent by the following functions issued by the test MHP:

• dc_mcf_send function (message send)
• dc_mcf_sendsync function (synchronous message send)
• dc_mcf_resend function (message resend)

To use this facility, specify swmsg in the -e option of the test start command.

Messages sent by the following functions cannot be invalidated:

• dc_mcf_reply function (response message send)
• dc_mcf_sendrecv function (synchronous message send and receive)