The key field extends beyond the end of the record; starting position defaults to 1.
20
Cause . . . . . : The sum of the key location (specified as the parameter for keyword KEYLOC) and the Key-Length entry (positions 29 - 33) is greater than the Record-Length entry (positions 23 - 27) plus 1.
Recovery . . . : Change the values of any combination of the three entries specified to ensure that the key is entirely within the record. Compile again.