How To Fix WN728 - Only same numbers between business partner and customer/supplier allowed

SAP Error Message - Details

• Message type: E = Error

• Message class: WN - Plant master data maintenance (integrated)

• Message number: 728

• Message text: Only same numbers between business partner and customer/supplier allowed

Self-Explanatory Message

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Smart SAP Assistant

• What is the cause and solution for SAP error message WN728 - Only same numbers between business partner and customer/supplier allowed ?

  The SAP error message WN728 ("Only same numbers between business partner and customer/supplier allowed") typically occurs when there is a mismatch between the Business Partner (BP) number and the Customer or Supplier number in the SAP system. This error is common in scenarios where the Business Partner functionality is integrated with the Customer and Supplier master data.
  Cause:
  
  Mismatch in Number Ranges: The Business Partner number and the Customer/Supplier number are expected to be the same, but they may have been created with different number ranges or formats.
  Incorrect Configuration: The configuration settings in the system may not be aligned, leading to discrepancies between the Business Partner and the associated Customer/Supplier records.
  Data Migration Issues: If data was migrated from another system, there may have been errors in how the Business Partner and Customer/Supplier numbers were mapped.
  Manual Entry Errors: During manual entry, the user may have inadvertently created a Business Partner with a different number than the corresponding Customer or Supplier.
  
  Solution:
  
  Check Number Ranges: Verify that the number ranges for Business Partners and Customers/Suppliers are configured correctly and are aligned. Ensure that they are set to allow the same numbers.
  Update Records: If there is a mismatch, update the Business Partner or the Customer/Supplier record to ensure that they have the same number. This can be done through transaction codes like BP (Business Partner) or XD01/XK01 (Customer/Supplier).
  Review Configuration: Check the configuration settings in the SAP system for Business Partners and ensure that they are set up correctly. This may involve reviewing the settings in the SPRO transaction.
  Data Consistency Check: Run consistency checks to identify any discrepancies between Business Partner and Customer/Supplier records. This can help in identifying and correcting any issues.
  Consult Documentation: Refer to SAP documentation or notes related to Business Partner and Customer/Supplier integration for any specific guidelines or updates.
  
  Related Information:
  
  Transaction Codes: 
  
  BP: Business Partner Maintenance
  XD01: Create Customer (General Data)
  XK01: Create Vendor (General Data)
  
  
  SAP Notes: Check for any relevant SAP Notes that may address this specific error or provide additional guidance.
  Integration with Other Modules: Understand how the Business Partner concept integrates with other modules like Sales and Distribution (SD) and Materials Management (MM).
  User Roles and Authorizations: Ensure that the user has the necessary authorizations to create or modify Business Partner and Customer/Supplier records.
  
  By following these steps, you should be able to resolve the WN728 error and ensure that your Business Partner and Customer/Supplier records are correctly aligned.