MH234 - For the material &1 the main EAN for the unit of measure &2 is not unique

SAP Error Message - Details

• Message type: E = Error

• Message class: MH - Maintain Material Master Data (Retail)

• Message number: 234

• Message text: For the material &1 the main EAN for the unit of measure &2 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.

Unfortunately, there isn't any extra information in this error notice.

What else can you do?

First, use our AnswerBot below to get a possible cause and solution (requires a premium subscription).

Also, review the in-depth Common Questions & Answers listed below; you could discover a solution there or be able to connect with others who have faced similar challenges.

You can also try searching the SAP support portal (support.sap.com) but you need a special user ID to access it. It is possible that an SAP support note exists that provides additional details about the mistake or even steps for fixing it.

Smart SAP Assistant

• What is the cause and solution for SAP error message MH234 - For the material &1 the main EAN for the unit of measure &2 is not unique ?

  The SAP error message MH234 indicates that there is an issue with the European Article Number (EAN) for a specific material and its unit of measure (UoM). The error states that the main EAN for the specified material and UoM is not unique, meaning that there are multiple entries for the same EAN in the system, which can lead to confusion and errors in inventory management, sales, and logistics processes.
  Cause:
  
  Duplicate EAN Entries: The most common cause of this error is that the same EAN has been assigned to multiple materials or units of measure in the system.
  Incorrect Data Entry: There may have been a mistake during data entry, leading to the same EAN being assigned to different materials or UoMs.
  Data Migration Issues: If data was migrated from another system, it’s possible that duplicates were introduced during the migration process.
  
  Solution:
  To resolve the MH234 error, you can follow these steps:
  
  
  Check EAN Assignments:
  
  Go to the material master data for the affected material and check the EAN assignments.
  Use transaction code MM03 to display the material and navigate to the "Sales: General/Plant Data" or "Basic Data" views to see the EANs assigned.
  
  
  
  Identify Duplicates:
  
  Use transaction code MM02 to modify the material master and check for any duplicate EANs.
  You can also run a report or query to find all materials that share the same EAN.
  
  
  
  Correct the Data:
  
  If duplicates are found, decide which EAN should be the main EAN and remove or change the others.
  Ensure that each material and UoM combination has a unique EAN.
  
  
  
  Data Validation:
  
  After making changes, validate the data to ensure that the error does not occur again.
  Consider implementing checks or validations in your data entry processes to prevent future duplicates.
  
  
  
  Consult Documentation:
  
  Review SAP documentation or consult with your SAP support team for any specific configurations or settings that may affect EAN assignments.
  
  
  
  Related Information:
  
  EAN (European Article Number): A unique identifier for products, primarily used in retail and logistics.
  Material Master Data: The central repository of information related to materials in SAP, which includes details like descriptions, units of measure, and EANs.
  Transaction Codes:
  
  MM03: Display Material Master
  MM02: Change Material Master
  MM01: Create Material Master
  
  
  
  By following these steps, you should be able to resolve the MH234 error and ensure that your material master data is accurate and compliant with SAP requirements.