I'm wanting to learn the possible sequence of PTFs.

Base + PTF1 gives error  + PTF2 gives good result.

Normal updates would be
Base + PTF1 (without install) + PTF2 gives good result.

Site with base finds out and wants to avoid PTF1 and install PTF2.
But PTF2 can't install without PTF1?
Creating PTF3 with 1 and 2 for base won't install on Base + PTF1?

On Sat, Dec 6, 2025 at 8:35 PM Jon Perryman <[email protected]> wrote:

> On Sat, 6 Dec 2025 15:10:50 +0100, Radoslaw Skorupka <
> [email protected]> wrote:
>
> >can we also assume the REWORK is never changed in PTF?
>
> I only worked for vendors but for released PTF's (IBM or vendor), REWORK
> should never change for the PTF.
>
> Understand REWORK replaces a PTF (or APAR) in SMPMTS. Nothing more. If
> it's been applied using an older REWORK, then APPLY REDO is required but
> can be risky if applied PTFs prereq this PTF.
>
> REWORK for APARs is simple because the PTF SUPs (supersedes) the APAR
> which will fix any possible changes made by the APAR at any customer site.
>
> REWORK for PTFs should only be allowed when APPLY REDO is unnecessary
> (e.g. comment changes in the PTF header).
>
> >In case of error it is marked as hold and new PTF is released, which
> >fixes the error inside previous one.
>
> HOLD ERROR is not a requirement for a PTF that introduces an error. This
> is a choice we make when we understand the error.
>
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-- 
Mike A Schwab, Springfield IL USA
Where do Forest Rangers go to get away from it all?

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