How To Fix MDG_GN025 - Loop in object graph - system error

SAP Error Message - Details

• Message type: E = Error

• Message class: MDG_GN - Messages from the Generator

• Message number: 025

• Message text: Loop in object graph - system error

Self-Explanatory Message

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Smart SAP Assistant

• What is the cause and solution for SAP error message MDG_GN025 - Loop in object graph - system error ?

  The SAP error message MDG_GN025: Loop in object graph - system error typically occurs in the context of Master Data Governance (MDG) when there is a circular reference in the object graph being processed. This can happen during data modeling, data replication, or when trying to create or update master data records.
  Cause:
  
  Circular References: The most common cause of this error is a circular reference in the relationships between master data objects. For example, if Object A references Object B, and Object B references Object A, it creates a loop that the system cannot resolve.
  Incorrect Configuration: Misconfiguration in the data model or relationships can lead to loops in the object graph.
  Data Integrity Issues: Existing data might have integrity issues that create loops when the system tries to process them.
  
  Solution:
  
  Analyze Object Relationships: Review the relationships between the master data objects involved. Use transaction codes like MDGIMG to check the configuration and ensure there are no circular references.
  Data Model Review: Check the data model configuration in the MDG system. Ensure that the relationships are defined correctly and do not create loops.
  Data Cleanup: If the error is due to existing data, you may need to clean up the data to remove circular references. This might involve updating or deleting certain records.
  Debugging: If you have access to debugging tools, you can trace the execution to identify where the loop is occurring. This can provide insights into which objects are causing the issue.
  Consult Documentation: Refer to SAP documentation or notes related to MDG and the specific error message for additional guidance and best practices.
  SAP Support: If the issue persists and you cannot identify the cause, consider reaching out to SAP support for assistance. They may provide patches or additional insights based on the specific version of your system.
  
  Related Information:
  
  Transaction Codes: Familiarize yourself with relevant transaction codes such as MDGIMG, MDG_MAT, or MDG_MAT_MAINT for managing master data.
  SAP Notes: Check SAP Notes for any known issues or fixes related to the MDG_GN025 error.
  Community Forums: Engage with SAP community forums or user groups where similar issues may have been discussed, and solutions shared.
  
  By following these steps, you should be able to identify and resolve the cause of the MDG_GN025 error in your SAP system.