Field-Record-Relation entry is not valid for match or control field; defaults to blank.
20
Cause . . . . . : A Field-Record-Relation-Indicator entry (positions 67 - 68 of an Input-Field specification) that has been specified with a Control-Levels entry (positions 63 - 64), or with a Matching-Fields entry (positions 65 - 66) is not 01-99, H1-H9, L1-L9, MR, U1-U8, or blank.
Recovery . . . : Specify a valid Field-Record-Relation entry (positions 67 - 68). Compile again.
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