If it is SMS compressed, it must be cataloged as the details needed for decompression and re-compression reside in the datasets catalog entry.

Michael

At 10:34 AM 7/27/2024, Colin Paice wrote:

I have just brought up a standalone z/OS  3.1 system.   I used ISPF 3.4,
specified a dataset and volume, and the dataset was found.
If I then use E to edit it, I get the message"Dataset not cataloged".
This technique works fine for z/OS 2.5.
Do all data sets have to be cataloged on 3.1  - or am I missing some
configuration ?
This was a surprise rather than a problem, as my next two steps were import
the user catalog, and defined the alias for the HLQ.

Colin

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