Record-Identification-Codes entry is not blank for Look-Ahead record; defaults to blanks.
20
Cause . . . . . : The Record-Identification-Codes entry (positions 23 - 46) must be blank for a Look-Ahead Input specification (** in positions 21 - 22).
Recovery . . . : Specify blanks in the Record-Identification-Codes entry (positions 23 - 46) for a Look-Ahead Input record. Compile again.