How To Fix CN225 - Key & for calculating the relationship offset is invalid

SAP Error Message - Details

• Message type: E = Error

• Message class: CN - Meldungen für Netzpläne

• Message number: 225

• Message text: Key & for calculating the relationship offset is invalid

Self-Explanatory Message

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Smart SAP Assistant

• What is the cause and solution for SAP error message CN225 - Key & for calculating the relationship offset is invalid ?

  The SAP error message CN225, which states "Key & for calculating the relationship offset is invalid," typically occurs in the context of project management or network planning within SAP. This error is related to the configuration of relationships between activities or tasks in a project.
  Cause:
  
  
  Invalid Key: The error indicates that the key used to calculate the relationship offset is not valid. This could be due to:
  
  A missing or incorrect configuration in the project structure.
  An invalid or non-existent relationship type being referenced.
  Issues with the data integrity of the project or network.
  
  
  
  Data Inconsistencies: If there are inconsistencies in the data, such as missing dependencies or incorrect dates, this can lead to the error.
  
  
  Customizations: If there are custom developments or enhancements in the project management module, they might not be handling relationships correctly.
  
  
  Solution:
  
  
  Check Relationship Configuration: 
  
  Verify the relationships between tasks or activities in the project. Ensure that all keys and relationship types are correctly defined and valid.
  Check the configuration settings for the project management module to ensure that they are set up correctly.
  
  
  
  Data Validation:
  
  Review the project data for any inconsistencies. Look for missing relationships or incorrect dates that could be causing the issue.
  Use transaction codes like CJ20N (Project Builder) to inspect the project structure and relationships.
  
  
  
  Recreate Relationships:
  
  If a specific relationship is causing the issue, consider deleting and recreating it to ensure that it is set up correctly.
  
  
  
  Check for Custom Code:
  
  If there are any custom enhancements or modifications in the project management area, review the code to ensure it is functioning as intended.
  
  
  
  Consult Documentation: 
  
  Refer to SAP documentation or notes related to project management and network planning for any known issues or additional troubleshooting steps.
  
  
  
  SAP Support: 
  
  If the issue persists, consider reaching out to SAP support for assistance. They may provide specific notes or patches that address the issue.
  
  
  
  Related Information:
  
  Transaction Codes: Familiarize yourself with relevant transaction codes such as CJ20N (Project Builder), CJ02 (Change Project), and CJ03 (Display Project) for managing project structures.
  SAP Notes: Search for SAP Notes related to error CN225 in the SAP Support Portal for any specific fixes or recommendations.
  User Forums: Engage with SAP community forums or user groups where similar issues may have been discussed, and solutions shared.
  
  By following these steps, you should be able to identify the cause of the CN225 error and implement a solution to resolve it.