A Control-Level entry (positions 59-60 of an Input-Field specification) is not blank or L1-L9, OR a Matching-Field entry in positions 61-62) is not blank or M1-M9.
Specify a blank or L1-L9 in the Control-Level entry (positions 59-60), OR specify blank or M1-M9 in the Matching-Field entry (positions 61-62). Recompile.
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