How To Fix M3347 - EAN already used for unit of measure & of this material

M3347 - Overview

• Message type: E = Error

• Message class: M3 - Material Master

• Message number: 347

• Message text: EAN already used for unit of measure & of this material

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

What causes this issue?

You have entered an EAN that is already being used for another unit of
this material.

System Response

How to fix this error?

Check to see whether you really want to assign this number, or correct
your entry.

Error message extract from SAP system. Copyright SAP SE.

M3347 - Details

• The SAP error message M3347, which states "EAN already used for unit of measure of this material," typically occurs when you are trying to assign an EAN (European Article Number) to a material in SAP that has already been assigned to another unit of measure for the same material. This can happen during the creation or modification of material master data.
  
  Cause:
  
  Duplicate EAN Assignment: The EAN you are trying to assign is already linked to a different unit of measure for the same material.
  Material Master Data Configuration: The material master data may not be configured correctly, leading to conflicts in EAN assignments.
  Data Entry Error: There may be a mistake in data entry, where the same EAN is inadvertently being reused.
  
  
  Solution:
  
  
  Check Existing EAN Assignments:
  
  Go to the material master record (transaction code MM03) and check the existing EANs assigned to the material.
  Verify if the EAN you are trying to assign is already in