Red Alert : Potential outage on multiple z/OS LPARs when installing z10 Driver 73 MCL006

This Red Alert just arrived in my mail box.

Abstract
"Potential outage on multiple z/OS LPARs when installing z10 Driver 73 MCL006 if fix for APAR OA23230 not installed. Outage may occur due to storage overlay on all z/OS LPARs when WLM Group Capacity is active and LPARS are dynamically added to the z10 processor".

You can read the entire description over here.

Recommended action
"z/OS 1.8 and z/OS 1.9 users with WLM Group Capacity active on z10 should apply the PTFs for HIPER APAR OA23230. PTFs UA39601 (R730) and UA39602 (R740) are available on RSU0803. This fix needs to be applied before dynamically adding any LPARs or installing MCL006. An alternative circumvention is to turn off group capacity until the PTF is installed".

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