SAP Message QE174 - The inspection unit number or serial number you entered already exists

Diagnosis
The unit to be inspected number or the serial number you entered was
either

  • entered more than once or

  • units to be inspected or serial numbers were changed

    • Procedure
    You can either

    • invalidate the individual value by setting the indicator

    • delete the unit to be inspected or serial number

    • overwrite the unit to be inspected or serial number