The parameter for %NULLIND is not valid; %NULLIND is ignored.
20
Cause . . . . . : The parameter for built-in function %NULLIND must be a null-capable field name. If the field is defined as a constant in the program, it is not null-capable in the program. If the field is an array, an array index must be specified.
Recovery . . . : Correct the parameter for built-in function %NULLIND. Compile again.
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