Important Notice

The pages on this site contain documentation for very old MS-DOS software, purely for historical purposes. If you're looking for up-to-date documentation, particularly for programming, you should not rely on the information found here, as it will be woefully out of date.

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  Message:      0012
 
  Text:         Operand <data-name> is not declared
 
  Explanation:  You are attempting to use a data-name which you have
                not declared, or which you have misspelled.
 
  Resolution:   This error may not always occur directly below the
                data item that is not declared. This is because your
                COBOL system continues processing through the source
                code to find out whether the data item is qualified.
                To find the item in error, work backwards through the
                source to the most recent item.
 
                Ensure that the data item is declared.
                                    -♦-