How To Fix CN800 - ------ Relationships ---------------------------------------

SAP Error Message - Details

• Message type: E = Error

• Message class: CN - Meldungen für Netzpläne

• Message number: 800

• Message text: ------ Relationships ---------------------------------------

Self-Explanatory Message

Since SAP believes that this specific error message is 'self-explanatory,' no more information has been given.The majority of messages in the SAP system have a message text, however this is frequently insufficient to comprehend or resolve the problem.

To make things easier, more detailed information is frequently added to describe the issue, how to fix it, and the necessary steps or configuration modifications.

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Smart SAP Assistant

• What is the cause and solution for SAP error message CN800 - ------ Relationships --------------------------------------- ?

  The SAP error message CN800 typically relates to issues with relationships in the context of project management or network planning within the SAP system. This error can occur in various scenarios, such as when trying to create or modify relationships between activities in a project or network.
  Cause:
  The CN800 error message usually indicates that there is a problem with the relationships defined between different elements (like tasks or activities) in a project. Common causes include:
  
  Invalid Relationship Type: The relationship type defined between activities may not be valid or may not conform to the rules of the project structure.
  Missing Dependencies: One or more of the activities involved in the relationship may not exist or may not be properly defined.
  Circular Dependencies: There may be a circular relationship where an activity is dependent on itself, either directly or indirectly.
  Incorrect Dates: The start and finish dates of the activities may not align correctly with the defined relationships.
  Project Structure Issues: The overall project structure may have inconsistencies or errors that affect the relationships.
  
  Solution:
  To resolve the CN800 error, you can take the following steps:
  
  
  Check Relationship Types: Review the relationship types defined between the activities and ensure they are valid. Common types include Finish-to-Start (FS), Start-to-Start (SS), Finish-to-Finish (FF), and Start-to-Finish (SF).
  
  
  Verify Activity Existence: Ensure that all activities involved in the relationship are correctly defined and exist in the system.
  
  
  Inspect for Circular Dependencies: Check for any circular dependencies in the relationships. If found, you will need to restructure the relationships to eliminate the circular reference.
  
  
  Review Dates: Ensure that the start and finish dates of the activities are set correctly and that they align with the defined relationships.
  
  
  Check Project Structure: Review the overall project structure for any inconsistencies or errors that may affect the relationships.
  
  
  Use Transaction Codes: Utilize relevant transaction codes (like CJ20N for project management) to analyze and modify the project structure and relationships.
  
  
  Consult Documentation: Refer to SAP documentation or help resources for specific guidance on handling project relationships and error messages.
  
  
  Related Information:
  
  SAP Notes: Check SAP Notes for any known issues or patches related to the CN800 error.
  SAP Community: Engage with the SAP Community forums for insights from other users who may have encountered similar issues.
  Training and Documentation: Consider reviewing SAP training materials or documentation related to project management and network planning for best practices.
  
  If the issue persists after following these steps, it may be beneficial to consult with your SAP support team or a technical consultant for further assistance.