How To Fix WPRO_XI_PROXY054 - EAN/UPC &1 is not unique

SAP Error Message - Details

• Message type: E = Error

• Message class: WPRO_XI_PROXY - Messages Service Processing Retail Event

• Message number: 054

• Message text: EAN/UPC &1 is not unique

Self-Explanatory Message

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• What is the cause and solution for SAP error message WPRO_XI_PROXY054 - EAN/UPC &1 is not unique ?

  SAP Error Message:
  
  WPRO_XI_PROXY054 EAN/UPC &1 is not unique
  
  Cause:
  This error occurs when the system detects that the EAN/UPC code (European Article Number / Universal Product Code) you are trying to assign to a material or product already exists for another material in the system. In SAP, EAN/UPC codes must be unique identifiers for products to avoid confusion in logistics, sales, and inventory processes.
  Specifically, the error arises during the creation or update of material master data or when processing IDocs or proxy messages related to material data, where the EAN/UPC code is checked for uniqueness.
  
  Explanation:
  
  The EAN/UPC code is used as a unique barcode identifier for products.
  SAP enforces uniqueness to ensure that each EAN/UPC corresponds to exactly one material.
  If you try to assign an EAN/UPC code that is already assigned to another material, the system throws this error.
  
  
  Solution:
  
  
  Check for Duplicate EAN/UPC Codes:
  
  Use transaction MM03 (Display Material) or MM04 (Display Material EAN/UPC) to check which material currently holds the EAN/UPC code.
  Alternatively, use table MARA or EANLH to search for the EAN/UPC code.
  
  
  
  Correct the EAN/UPC Code:
  
  If the EAN/UPC code is mistakenly assigned to multiple materials, decide which material should keep the code.
  Remove or change the EAN/UPC code from the incorrect material.
  
  
  
  Assign a Unique EAN/UPC Code:
  
  Ensure that the EAN/UPC code you want to assign is unique and not used by any other material.
  If you need to assign a new code, generate or obtain a valid unique EAN/UPC.
  
  
  
  Data Consistency Check:
  
  Run consistency checks or reports to identify duplicate EAN/UPC codes in the system.
  Clean up duplicates to prevent future errors.
  
  
  
  If the error occurs during IDoc or proxy processing:
  
  Check the inbound data for duplicate EAN/UPC codes.
  Correct the source data or mapping to ensure uniqueness.
  
  
  
  
  Related Information:
  
  
  Tables:
  
  MARA - General Material Data
  EANLH - EAN/UPC Codes for Materials
  MARC - Plant Data for Material
  
  
  
  Transactions:
  
  MM03 - Display Material
  MM04 - Display Material EAN/UPC
  SE16 or SE16N - Data Browser to check tables like EANLH
  
  
  
  Notes and Documentation:
  
  SAP Note related to EAN/UPC uniqueness enforcement.
  Business process guidelines for barcode management.
  
  
  
  Best Practices:
  
  Maintain a central registry of EAN/UPC codes.
  Use barcode standards and validation tools.
  Regularly audit material master data for duplicates.
  
  
  
  
  Summary:
  The error WPRO_XI_PROXY054 EAN/UPC &1 is not unique means the EAN/UPC code you are trying to assign already exists for another material. To resolve it, identify the conflicting material, correct or remove the duplicate code, and ensure that each EAN/UPC code is unique across your material master data.