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COBCH0351 "LOCK" clause specified for "EXCLUSIVE" file

You have specified a LOCK clause in a READ statement for a file that you have already locked with an EXCLUSIVE lock (in the FILE-CONTROL paragraph of your code).

Resolution:

Record locking is impossible on a file which your run unit has already locked with an EXCLUSIVE lock. To ensure that the two LOCK entries are compatible, you should either delete the LOCK entry in the relevant READ statement, or alter the LOCK MODE IS entry in the FILE-CONTROL paragraph.

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