How To Fix W_CB121 - Item number &1 was assigned twice in one document

W_CB121 - Overview

• Message type: E = Error

• Message class: W_CB -

• Message number: 121

• Message text: Item number &1 was assigned twice in one document

What causes this issue?

When creating a chargeback request, numbers that must be unique within a
document are assigned for the items. Item number &V1& was assigned twice
for one document.

System Response

The document cannot be created as the item number is not unique.

How to fix this error?

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.

W_CB121 - Details

• SAP Error Message:
  W_CB121 - Item number &1 was assigned twice in one document
  
  
  Cause:
  This warning message occurs when the same item number is assigned more than once within a single document. In SAP, each item in a document (such as a sales order, delivery, billing document, or material document) must have a unique item number. Duplicate item numbers violate this rule and cause the system to raise this warning.
  Common scenarios causing this error include:  
  
  Manual entry errors where the user accidentally reuses an item number.  
  Custom programs or interfaces incorrectly assigning item numbers.  
  Data migration or upload errors where item numbers are not properly incremented or checked.  
  Copying documents without adjusting item numbers.
  
  
  
  Solution:
  
  
  Check the Document Items:
  Review the document in question and verify the item numbers. Ensure that each item has a unique number.
  
  
  Correct the Duplicate Item Numbers:  
  
  If the document is being created manually, change the