How To Fix PJ680 - Relationship & defined twice (Please check)

SAP Error Message - Details

• Message type: E = Error

• Message class: PJ - MPX interface messages (Download and Upload)

• Message number: 680

• Message text: Relationship & defined twice (Please check)

What causes this issue?

You have entered a relationship with the same type for the same
activity several times in field <ZH>predecessor </> or <ZH>successor</>
in Microsoft Project (R).

System Response

INCLUDE 'NA_ALLG_NOVERARBEITUNG' OBJECT DOKU ID TX

How to fix this error?

INCLUDE 'NA_ALLG_MOEGLICH' OBJECT DOKU ID TX
RESET N1
Correct the relationship in the MPX file.
Call up the MPX file in Microsoft Project (R) and correct the
relationship. Recreate the MPX file.

Error message extract from SAP system. Copyright SAP SE.

Smart SAP Assistant

• What is the cause and solution for SAP error message PJ680 - Relationship & defined twice (Please check) ?

  The SAP error message PJ680 ("Relationship & defined twice (Please check)") typically occurs in the context of project management within SAP, particularly when dealing with project structures and relationships between different elements (like WBS elements, activities, etc.). This error indicates that a relationship has been defined more than once for the same project element, which is not allowed.
  Cause:
  
  Duplicate Relationships: The most common cause of this error is that the same relationship type (e.g., Finish-to-Start, Start-to-Start) has been defined multiple times for the same predecessor and successor combination.
  Data Entry Errors: During the creation or modification of project elements, users may inadvertently create duplicate entries.
  System Configuration Issues: In some cases, system settings or configurations may lead to unexpected behavior, causing duplicates to appear.
  
  Solution:
  
  
  Check Relationships: 
  
  Go to the project structure (WBS elements or activities) where the error is occurring.
  Review the relationships defined for the specific project element.
  Look for any duplicate entries for the same predecessor and successor.
  
  
  
  Delete Duplicates:
  
  If duplicates are found, delete the redundant relationship entries.
  Ensure that only one relationship of each type exists between the same predecessor and successor.
  
  
  
  Use Transaction Codes:
  
  You can use transaction codes like CJ20N (Project Builder) or CJ02 (Change Project) to view and edit project relationships.
  Navigate to the "Relationships" tab and check for duplicates.
  
  
  
  Validation:
  
  After making changes, validate the project structure to ensure that the error is resolved.
  You can also use the "Check" function in the project builder to identify any remaining issues.
  
  
  
  Consult Documentation: If the issue persists, refer to SAP documentation or consult with your SAP support team for further assistance.
  
  
  Related Information:
  
  SAP Notes: Check for any relevant SAP Notes that might address this specific error or provide additional troubleshooting steps.
  User Forums: SAP Community forums can be a valuable resource for finding similar issues faced by other users and their solutions.
  Training: Consider training sessions or materials on project management in SAP to better understand how to manage relationships and avoid such errors in the future.
  
  By following these steps, you should be able to resolve the PJ680 error and ensure that your project relationships are correctly defined.