Chain before write or update to verify there's no duplicate first?

On Wed, Feb 8, 2023 at 3:31 PM Justin Taylor <jtaylor.0ab@xxxxxxxxx> wrote:

I retrofit an old program with a *PSSR to serve as a generic error
handler. Today, the program encountered a duplicate key error on an EXCEPT
to a program-described file. It raised an unhandled exception without
hitting the *PSSR.

Is there a way to get the *PSSR to handle this? The program is rife with
unnamed EXCEPT conditioned on a large number of different indicators, and
I'd rather not have to trap for exceptions on every EXCEPT.


TIA
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