Verifying IMS receipt of irrecoverable messages

The SLU P system does not request that IMS acknowledge receipt of irrecoverable messages. However, if the system is transmitting multiple irrecoverable messages, indicating both begin-bracket and end-bracket, and wants to verify their receipt, it can send the VTAM® CHASE command.

VTAM indicators must request a DR1. When the SLU P system receives the normal definite response 1, all messages preceding the CHASE command have been received by IMS.