How To Fix B0306 - The 'copy customer number' flag is set

SAP Error Message - Details

• Message type: E = Error

• Message class: B0 - Business Partner General

• Message number: 306

• Message text: The 'copy customer number' flag is set

Self-Explanatory Message

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Smart SAP Assistant

• What is the cause and solution for SAP error message B0306 - The 'copy customer number' flag is set ?

  The SAP error message B0306, which states "The 'copy customer number' flag is set," typically occurs in the context of customer master data management. This error indicates that there is an issue with the configuration or data entry related to the copying of customer numbers in the system.
  
  Cause:
  The error is usually triggered when:
  
  The system is configured to copy customer numbers from one customer record to another, but there is a conflict or issue with the existing customer data.
  The 'copy customer number' flag is set in the configuration, but the system cannot process the request due to existing constraints or data integrity issues.
  There may be a mismatch in the customer number formats or other related data that prevents the operation from completing successfully.
  
  
  Solution:
  To resolve the B0306 error, you can take the following steps:
  
  
  Check Configuration Settings:
  
  Go to the configuration settings for customer master data in the SAP system (transaction code SPRO).
  Navigate to