How To Fix QE174 - The inspection unit number or serial number you entered already exists

QE174 - Overview

• Message type: E = Error

• Message class: QE - RM-QSS Fehlertexte zur Ergebniserfassung

• Message number: 174

• Message text: The inspection unit number or serial number you entered already exists

What causes this issue?

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

System Response

The system issues an error message and will not allow you to continue with this transaction until the error is resolved.

How to fix this error?

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

Error message extract from SAP system. Copyright SAP SE.

Smart SAP Assistant

• What is the cause and solution for SAP error message QE174 - The inspection unit number or serial number you entered already exists ?

  The SAP error message QE174 indicates that the inspection unit number or serial number you are trying to enter already exists in the system. This typically occurs during the creation or processing of inspection lots in Quality Management (QM) when the system detects a duplicate entry.
  
  Cause:
  
  Duplicate Entry: The most common cause is that the inspection unit number or serial number you are trying to use has already been assigned to another inspection lot or is already in use in the system.
  Incorrect Data Entry: There may be a typographical error in the number you are entering, leading to confusion with an existing entry.
  System Configuration: The system may be configured to enforce unique constraints on inspection unit numbers or serial numbers, which can lead to this error if not managed properly.
  
  
  Solution:
  
  
  Check Existing Entries: 
  
  Use transaction codes like IQ03 (Display Serial Number) or QA03 (Display Inspection Lot) to check if the inspection unit