Factor 1 of the PARM operation must be modifiable.
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Cause . . . . . : The Factor 1 entry (positions 12 - 25) of the PARM operation is a User-Date field (UDATE, UMONTH, UDAY, UYEAR, *DATE, *MONTH, *DAY, or *YEAR), a Look-Ahead field, *IN1P, *INMR, or an input-only parameter (CONST keyword specified on the parameter definition). These fields cannot be modified.
Recovery . . . : Change the Factor 1 entry (positions 12 - 25) to a field that can be modified. Compile again.
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