How To Fix MPE_OAN205 - Relationships with identical start and end element are not allowed.

SAP Error Message - Details

• Message type: E = Error

• Message class: MPE_OAN - Operation Activity Network Messages

• Message number: 205

• Message text: Relationships with identical start and end element are not allowed.

Self-Explanatory Message

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Smart SAP Assistant

• What is the cause and solution for SAP error message MPE_OAN205 - Relationships with identical start and end element are not allowed. ?

  The SAP error message MPE_OAN205 indicates that there is an issue with the relationships defined in the Master Data Management (MDM) or in the context of the Object Attribute Network (OAN) where two or more relationships have identical start and end elements. This typically occurs in scenarios where relationships between objects or attributes are being defined, and the system does not allow for duplicate relationships that point from the same source to the same target.
  Cause:
  
  Duplicate Relationships: The most common cause of this error is the existence of multiple relationships that have the same starting and ending points. For example, if you have a relationship defined from Object A to Object B, and you try to define another relationship from Object A to Object B, the system will throw this error.
  Data Entry Errors: Sometimes, this can occur due to data entry mistakes where the same relationship is inadvertently created multiple times.
  Configuration Issues: In some cases, the configuration of the relationship types may not be set up correctly, leading to conflicts.
  
  Solution:
  
  Review Relationships: Check the relationships defined in the system for the specific objects or attributes involved. Look for any duplicate entries that have the same start and end elements.
  Remove Duplicates: If you find duplicate relationships, remove or consolidate them to ensure that each relationship is unique.
  Adjust Configuration: If the issue is related to configuration, review the settings for relationship types and ensure that they are set up correctly to prevent duplicates.
  Data Validation: Implement data validation checks to prevent the creation of duplicate relationships in the future. This can include setting up rules or constraints in the data entry process.
  
  Related Information:
  
  SAP Documentation: Refer to the official SAP documentation for Master Data Management or Object Attribute Network for more details on how relationships are defined and managed.
  Transaction Codes: Use relevant transaction codes (like MDM, OAN, etc.) to navigate to the areas where relationships are defined and managed.
  Support Notes: Check SAP Support Portal for any notes or patches related to this error message, as there may be updates or fixes available.
  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 resolve the MPE_OAN205 error and ensure that your relationships are correctly defined in the SAP system.