What's changed in IBM MQ 9.3.0 Fix Pack 20

Update to zos_saf_registry.xml

From IBM MQ 9.3.0 Fix Pack 20, the sample configuration file zos_saf_registry.xml has been updated to remove a duplicate safAuthorization entry.

This update fixes an issue where an ICH408I error might occur when the IBM MQ Console on z/OS® is upgraded to a level that ships WebSphere® Liberty Profile 22.0.0.12 or later: that is, from IBM MQ 9.3.0 Fix Pack 2 for Long Term Support and from IBM MQ 9.3.1 CSU 1 and IBM MQ 9.3.2 for Continuous Delivery.

For more information, see Configuring a SAF registry for the IBM MQ Console and REST API.

New return code 2491

IBM MQ 9.3.0 Fix Pack 20 adds a new return code (2491) that can appear in messages that are moved to the dead letter queue. For more information, see 2491 0x000009bb MQRC_MSG_LENGTH_ERROR.