How To Fix MDRD403 - Delivery relationship is not unique (database consistency)

SAP Error Message - Details

• Message type: E = Error

• Message class: MDRD - Messages for Delivery Relationships

• Message number: 403

• Message text: Delivery relationship is not unique (database consistency)

Self-Explanatory Message

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Smart SAP Assistant

• What is the cause and solution for SAP error message MDRD403 - Delivery relationship is not unique (database consistency) ?

  The SAP error message MDRD403: Delivery relationship is not unique (database consistency) typically occurs in the context of managing delivery relationships in SAP, particularly when dealing with master data such as materials, customers, or vendors. This error indicates that there are multiple entries in the database that conflict with the expected uniqueness of a delivery relationship.
  Cause:
  
  Duplicate Entries: The most common cause of this error is the existence of duplicate entries in the database for the same delivery relationship. This can happen due to data migration, manual data entry errors, or inconsistencies in the master data.
  Incorrect Configuration: Sometimes, the configuration settings for delivery relationships may not be set up correctly, leading to conflicts.
  Data Inconsistency: If there are inconsistencies in the underlying data, such as missing or incorrect keys, this can also trigger the error.
  
  Solution:
  To resolve the MDRD403 error, you can follow these steps:
  
  
  Check for Duplicates:
  
  Use transaction codes like SE16 or SE11 to access the relevant database tables (e.g., LFA1, LFB1, MARA, etc.) and check for duplicate entries related to the delivery relationship.
  Identify and remove or correct any duplicate entries.
  
  
  
  Data Consistency Check:
  
  Run consistency checks using transaction codes like SLG1 (Application Log) to identify any inconsistencies in the data.
  Use transaction MDR1 to check and maintain delivery relationships.
  
  
  
  Correct Configuration:
  
  Review the configuration settings for delivery relationships in the relevant customizing transactions (e.g., SPRO) to ensure they are set up correctly.
  Make sure that the settings for the relevant master data (e.g., customer or vendor) are consistent and do not conflict.
  
  
  
  Data Migration Issues:
  
  If the issue arose after a data migration, review the migration process to ensure that it was executed correctly and that no duplicates were introduced.
  
  
  
  Consult Documentation:
  
  Refer to SAP documentation or notes related to the specific version of SAP you are using for any known issues or additional troubleshooting steps.
  
  
  
  Contact SAP Support:
  
  If the issue persists after trying the above steps, consider reaching out to SAP support for further assistance. They may provide specific notes or patches that address the issue.
  
  
  
  Related Information:
  
  Transaction Codes: Familiarize yourself with relevant transaction codes such as MDR1, SE16, SE11, and SLG1 for data checks and maintenance.
  SAP Notes: Search for SAP Notes related to MDRD403 for any specific fixes or recommendations provided by SAP.
  Master Data Management: Understanding the principles of master data management in SAP can help prevent similar issues in the future.
  
  By following these steps, you should be able to identify and resolve the underlying cause of the MDRD403 error in your SAP system.