SAP Message AH521 - Select an operand

Diagnosis
Position the cursor on an operand for an active schema step.

  • If you select an input operand, all preceding schema steps are
  • displayed which update in the indicated step.
    • If you select an output operand, all following schema steps are
    • displayed in which the indicated step updates.
      Note that there are variants with output operands that are excludedfrom the update.
      You can recognize these fields by doubleclicking on the relevantvariant in the schema. You find the field Update type on thefollowing screen. Entries in this field are output operands of anupdate character.

      System Response