How To Fix OPS_SE_PRS031 - Can't create Network-relationship with &1-&2, &3-&4

SAP Error Message - Details

• Message type: E = Error

• Message class: OPS_SE_PRS - Project Management: Messages for Service Enabling

• Message number: 031

• Message text: Can't create Network-relationship with &1-&2, &3-&4

Self-Explanatory Message

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Smart SAP Assistant

• What is the cause and solution for SAP error message OPS_SE_PRS031 - Can't create Network-relationship with &1-&2, &3-&4 ?

  The SAP error message OPS_SE_PRS031 indicates that there is an issue with creating a network relationship between two activities in a project. This error typically arises in the context of project management and scheduling within SAP, particularly when using the Project System (PS) module.
  Cause:
  The error message "Can't create Network-relationship with &1-&2, &3-&4" usually occurs due to one or more of the following reasons:
  
  
  Invalid Activity Status: One or both of the activities involved in the relationship may not be in a valid status to allow for the creation of a relationship. For example, if an activity is already completed or closed, you may not be able to create a new relationship.
  
  
  Incorrect Dates: The start and finish dates of the activities may not align correctly. For instance, if the predecessor activity is scheduled to finish after the successor activity is scheduled to start, this will lead to a conflict.
  
  
  Missing Dependencies: There may be missing dependencies or constraints that prevent the relationship from being established.
  
  
  Project Structure Issues: There could be issues with the project structure itself, such as missing or incorrect settings in the project definition or network.
  
  
  System Configuration: There may be configuration settings in the SAP system that restrict the creation of certain types of relationships.
  
  
  Solution:
  To resolve the OPS_SE_PRS031 error, you can take the following steps:
  
  
  Check Activity Status: Verify the status of both activities involved in the relationship. Ensure that they are both in a status that allows for relationship creation (e.g., not completed or closed).
  
  
  Review Dates: Check the start and finish dates of both activities. Make sure that the predecessor activity finishes before the successor activity starts.
  
  
  Validate Dependencies: Ensure that all necessary dependencies and constraints are correctly defined and that there are no conflicts.
  
  
  Inspect Project Structure: Review the project structure and network settings to ensure that everything is correctly configured. Look for any missing or incorrect settings.
  
  
  Consult Documentation: Refer to SAP documentation or help resources for specific guidelines on creating network relationships in your version of SAP.
  
  
  Check Configuration Settings: If you suspect that system configuration may be causing the issue, consult with your SAP Basis or configuration team to review relevant settings.
  
  
  Error Logs: Check the system logs for any additional error messages or warnings that may provide more context about the issue.
  
  
  Related Information:
  
  Transaction Codes: Familiarize yourself with relevant transaction codes such as CJ20N (Project Builder) or CN41 (Network Overview) to help you navigate and troubleshoot project-related issues.
  SAP Notes: Search for SAP Notes related to OPS_SE_PRS031 for any known issues or patches that may address the problem.
  User Forums: Consider checking SAP community forums or user groups for discussions related to this error, as other users may have encountered and resolved similar issues.
  
  By following these steps, you should be able to identify the root cause of the error and implement a solution to create the desired network relationship successfully.