Update automation that handles message IAT3100

Description: In the text of message IAT3100, a space has been added between the "z" and the release identifier. In z/OS V1R12, the text for message IAT3100 appeared as in the following example:

IAT3100 JES3 z1.12.0   SYSTEM  HOTSTART ON 2011.304 AS SY1

Starting with z/OS V1R13, the text appears as in the following example:

IAT3100 JES3 z 1.13.0  SYSTEM  HOTSTART ON 2011.304 AS SY1

If your message automation for JES3 depends on the message text instead of the message number, your JES3 automation routines might be affected.

Element or feature:

z/OS JES3.

When change was introduced:

z/OS V1R13.

Applies to migration from:

z/OS V1R12.

Timing:

Before the first IPL of z/OS V2R1.

Is the migration action required?

Yes, if you have automation routines that examine the message text instead of the message number.

Target system hardware requirements:

None.

Target system software requirements:

None.

Other system (coexistence or fallback) requirements:

None.

Restrictions:

None.

System impacts:

None.

Related IBM Health Checker for z/OS check:

None.

Steps to take: Change your automation routines to account for the additional space.

Reference information: For more information, see z/OS JES3 Messages.