How To Fix CN622 - Standard network contains more than the nine loops found

SAP Error Message - Details

• Message type: E = Error

• Message class: CN - Meldungen für Netzpläne

• Message number: 622

• Message text: Standard network contains more than the nine loops found

Self-Explanatory Message

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Smart SAP Assistant

• What is the cause and solution for SAP error message CN622 - Standard network contains more than the nine loops found ?

  The SAP error message CN622 ("Standard network contains more than the nine loops found") typically occurs in the context of project management and network planning within SAP, particularly when dealing with networks in the Project System (PS) module. This error indicates that the system has detected more than nine loops in the standard network, which exceeds the allowable limit.
  Cause:
  The error is caused by the structure of the network activities and their relationships. In SAP, a network can have multiple activities, and these activities can be interlinked with various dependencies (like finish-to-start, start-to-start, etc.). If the network structure is overly complex or if there are circular dependencies (loops) that exceed the limit of nine, the system will trigger this error.
  Solution:
  To resolve the CN622 error, you can take the following steps:
  
  
  Analyze the Network Structure:
  
  Review the network activities and their relationships. Look for any circular dependencies or complex interdependencies that may be causing the loops.
  
  
  
  Simplify the Network:
  
  If possible, simplify the network by breaking down complex relationships. This may involve restructuring the network or splitting it into smaller, more manageable networks.
  
  
  
  Check for Redundant Activities:
  
  Identify and remove any redundant activities or dependencies that do not contribute to the overall project plan.
  
  
  
  Use Alternative Planning Methods:
  
  If the project is too complex for a standard network, consider using alternative planning methods or tools within SAP that can handle more complex scenarios.
  
  
  
  Consult Documentation:
  
  Refer to SAP documentation or help resources for guidelines on network planning and limitations regarding loops.
  
  
  
  Seek Expert Assistance:
  
  If the issue persists, consider consulting with an SAP expert or a consultant who specializes in the Project System module for further analysis and recommendations.
  
  
  
  Related Information:
  
  SAP Notes: Check SAP Notes for any specific patches or updates related to this error message. Sometimes, SAP releases updates that address known issues.
  Project System (PS) Module: Familiarize yourself with the functionalities and limitations of the PS module, especially regarding network planning and activity management.
  Training and Resources: Consider training sessions or resources that focus on project management within SAP to better understand how to structure networks effectively.
  
  By following these steps, you should be able to identify the cause of the CN622 error and implement a solution to resolve it.