How To Fix SAPLWOSZ031 - EAN &1 is not unique

SAPLWOSZ031 - Overview

• Message type: E = Error

• Message class: SAPLWOSZ - Common function modules for Store WB

• Message number: 031

• Message text: EAN &1 is not unique

Self-Explanatory Message

Since SAP believes that this specific error message is 'self-explanatory,' no more information has been given.The majority of messages in the SAP system have a message text, however this is frequently insufficient to comprehend or resolve the problem.

To make things easier, more detailed information is frequently added to describe the issue, how to fix it, and the necessary steps or configuration modifications.

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SAPLWOSZ031 - Details

• The SAP error message "SAPLWOSZ031 EAN &1 is not unique" typically occurs in the context of handling materials or products that have an EAN (European Article Number) or barcode associated with them. This error indicates that the EAN you are trying to use is not unique in the system, meaning that there are multiple entries with the same EAN.
  
  Cause:
  
  Duplicate EANs: The most common cause of this error is that the EAN you are trying to enter already exists in the system for another material or product.
  Data Entry Errors: There may have been a mistake in data entry, leading to the same EAN being assigned to multiple materials.
  Master Data Issues: The material master data may not have been maintained correctly, leading to duplicates.
  
  
  Solution:
  
  
  Check for Duplicates:
  
  Use transaction codes like MM03 (Display Material) or MM02 (Change Material) to search for the EAN in the material master.
  You can also use transaction SE16N to query