How To Fix QF149 - Serial no. &3 already exists for confirmation no. &1, item no. &2

SAP Error Message - Details

• Message type: E = Error

• Message class: QF - Defects Recording

• Message number: 149

• Message text: Serial no. &3 already exists for confirmation no. &1, item no. &2

What causes this issue?

Serial number <(>&<)>3 already exists for confirmation number <(>&<)>1
with item number <(>&<)>2.

System Response

The system cannot automatically change the existing serial number.

How to fix this error?

Delete the existing defect data record in the transaction for changing
defects recording and restart the defect data transfer.

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

Procedure for System Administrators

Error message extract from SAP system. Copyright SAP SE.

Smart SAP Assistant

• What is the cause and solution for SAP error message QF149 - Serial no. &3 already exists for confirmation no. &1, item no. &2 ?

  The SAP error message QF149 indicates that there is a duplicate serial number being used in a confirmation for a specific item. This typically occurs in the context of production confirmations or goods movements where serial numbers are tracked for individual items.
  Cause:
  The error arises when:
  
  You attempt to confirm a production order or goods movement with a serial number that has already been assigned to another confirmation for the same item.
  The system enforces unique serial number assignments for each item in a confirmation, and the serial number you are trying to use is already linked to a different confirmation.
  
  Solution:
  To resolve this error, you can take the following steps:
  
  
  Check Existing Confirmations: 
  
  Review the existing confirmations for the specified confirmation number and item number to see where the serial number is already assigned.
  You can use transaction codes like CO11N (for production confirmations) or MB1A (for goods movements) to check the details.
  
  
  
  Use a Different Serial Number:
  
  If the serial number is indeed already in use, you will need to use a different serial number that is not currently assigned to any other confirmation for that item.
  
  
  
  Correct the Data Entry:
  
  Ensure that there are no data entry errors. Sometimes, the same serial number might be mistakenly entered multiple times.
  
  
  
  Review Serial Number Management Settings:
  
  Check the configuration settings for serial number management in your SAP system. Ensure that the settings align with your business processes and that they are correctly set up to handle serial numbers.
  
  
  
  Consult with Your SAP Support Team:
  
  If you are unable to resolve the issue, it may be beneficial to consult with your SAP support team or a functional consultant who can provide deeper insights into the configuration and data integrity.
  
  
  
  Related Information:
  
  Transaction Codes: Familiarize yourself with relevant transaction codes such as CO11N, CO15, MB1A, and IQ01 (for serial number management).
  Documentation: Review SAP documentation related to serial number management and production confirmations for more detailed guidance.
  User Exits and BAdIs: If your organization has custom developments, check if there are any user exits or BAdIs that might affect serial number handling.
  
  By following these steps, you should be able to identify the cause of the error and implement a solution to resolve it.