On 12 November 2013 18:31, Jim Mulder <d10j...@us.ibm.com> wrote:

>>It's curious looked at as a whole. The very existence of an AMA527I
>>suggests that PATH= is supported; it's an "I" message (nothing wrong),
>>and there must be code to discover that PATH= was specified.
[...]
>  TRSMAIN was an IBM internal tool which was written before
> the advent of PATH= in MVS.  When TRSMAIN morphed into
> AMATERSE, there was no intention of adding PATH= support.
> AMATERSE does a DEVTYPE, and checks DVACLASS (in IHADVA mapping).
> If it is not x'80' (tape) or x'20' (DASD), then the AMA583E
> meessage is issued.  I don't know what will be in DVACLASS for
> a Unix File System.

Ah - I get it. That text "..PATH=.SPECIFIED..." is in the DSNAME field
(of the JFCB?); I had assumed that AMATERSE was actively checking for
PATH=.

Tony H.

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