• X The number of formal parameters on the Procedure Division USING phrase
  X must be the same for both methods.

• X The presence or absence of the Procedure Division RETURNING phrase
  X must be consistent for the two methods.

• X Corresponding parameters in the Procedure Division USING and RETURNING
  X phrases must satisfy the following:
  • X If a formal parameter is a COBOL elementary data item not
    X described with USAGE IS OBJECT REFERENCE, the corresponding
    X parameter must have the same PICTURE, USAGE, SIGN, SYNCHRONIZED,
    X JUSTIFIED, and BLANK WHEN ZERO clauses. Note that periods and
    X commas can be interchanged if using the DECIMAL POINT IS COMMA
    X clause, and the PICTURE clause currency symbols can differ.

  • X If a formal parameter is a COBOL elementary data item described
    X with USAGE IS OBJECT REFERENCE, the corresponding parameter must
    X be defined with an identical USAGE clause or USAGE IS OBJECT
    X REFERENCE clause.

  • X For the purpose of conformance checking, a fixed-length group data
    X item is considered to be equivalent to an elementary alphanumeric
    X data item of the same length.
    
    X A variable-length group conforms only to other variable-length
    X groups that have the same maximum length.

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