Blank-After entry is not blank for a field which cannot be modified; defaults to blank.
20
Cause . . . . . : The Blank-After entry (position 45) is not blank when Field-Name entry (positions 30 - 43) contains the name of a field which cannot be modified. The Blank-After entry defaults to blank.
Recovery . . . : Specify blank in the Blank-after entry. Compile again.
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