just a random pick

JCL Abend code : S016

An error occurred in SAM SIO/PAGE fix or DASD end-of-block modules because of one of the following:

- The DASD end-of-block modules issued an EXCPVR SVC request on behalf of a user request, but a previous EXCPVR SVC request had not completed.

- A data extent control block (DECB) was used twice.

- Multiple reads or writes were issued, but only the last read or write was checked.

- An EXCPVR SVC request on behalf of a user request was going to be issued to read a data set that is execute access protected, but the user is not in supervisor state. .

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