Field-Name entry contains array index variable that is not valid; index is ignored.
20
Cause . . . . . : Field-Name entry (positions 49 - 62 of an Input-Field specification) contains a variable as array index that is not valid. The variable used as an array index must conform to RPG field name rules. The first character must be an alphabetic character and subsequent characters must be either alphabetic or numeric characters.
Recovery . . . : Specify a valid field name or numeric literal as array index. Compile again.
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