Sequence entry is not numeric but previous Sequence entry is numeric; defaults to previous sequence.
20
Cause . . . . . : A Sequence entry (positions 17 - 18 of an Input-Record specification) is not numeric, but a previous Sequence entry for the same file is numeric.
Recovery . . . : Ensure that all alphabetic Sequence entries (positions 17 - 18) precede numeric Sequence entries for the same file. Compile again.
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