How To Fix T7034 - Activity has a non-reversed successor

SAP Error Message - Details

• Message type: E = Error

• Message class: T7 - Forex entry

• Message number: 034

• Message text: Activity has a non-reversed successor

Self-Explanatory Message

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Smart SAP Assistant

• What is the cause and solution for SAP error message T7034 - Activity has a non-reversed successor ?

  The SAP error message T7034, which states "Activity has a non-reversed successor," typically occurs in the context of project management or production planning within SAP. This error indicates that there is an issue with the sequence of activities in a project or task network, specifically that one or more activities have successors that are not properly linked or reversed.
  Cause:
  
  
  Incorrect Activity Relationships: The error often arises when there are activities in a project that have been defined with successors that do not have a corresponding predecessor relationship. This can happen if the project structure is not correctly defined or if changes were made to the activity sequence without properly updating the relationships.
  
  
  Missing Reversal: If an activity is marked as completed or has been reversed, but its successor is still active or not marked as reversed, this inconsistency can trigger the error.
  
  
  Data Integrity Issues: Sometimes, data integrity issues can arise from manual changes or imports that do not maintain the necessary relationships between activities.
  
  
  Solution:
  
  
  Check Activity Relationships: Review the activity relationships in the project or task network. Ensure that all successors have corresponding predecessors and that the relationships are correctly defined.
  
  
  Reverse Activities: If an activity has been marked as completed or reversed, ensure that all its successors are also marked appropriately. You may need to reverse the successor activities or adjust their statuses.
  
  
  Use Transaction Codes: Utilize relevant transaction codes (like CJ20N for project management) to navigate to the project structure and check the relationships between activities. You can also use CNO1 to check network activities.
  
  
  Adjust Project Structure: If necessary, adjust the project structure to ensure that all activities are properly linked. This may involve adding or removing relationships between activities.
  
  
  Consult Documentation: Refer to SAP documentation or help resources for specific guidance on managing project activities and resolving relationship issues.
  
  
  Testing: After making changes, test the project or task network to ensure that the error no longer appears and that the activities are functioning as expected.
  
  
  Related Information:
  
  SAP Notes: Check SAP Notes for any known issues or patches related to this error message. SAP frequently updates its knowledge base with solutions for common problems.
  User Forums: Engage with SAP community forums or user groups where similar issues may have been discussed. Other users may have encountered the same error and can provide insights or solutions.
  Training and Documentation: Consider reviewing training materials or documentation related to project management in SAP to better understand how to manage activity relationships effectively.
  
  By following these steps, you should be able to identify the cause of the T7034 error and implement a solution to resolve it.