Control-Levels and Matching-Fields entries are not allowed for full procedural files.
20
Cause . . . . . : A Control-Levels entry (L1-L9 in positions 63 - 64 of an Input-field specification), or a Matching-Fields entry (M1-M9 in positions 65 - 66) is specified for a full procedural file (F in position 18 of the associated File-Description specification). The Control-Levels and Matching-Fields entries default to blanks.
Recovery . . . : Omit Control-Levels or Matching-Fields entries for a full procedural file. Compile again.
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