How To Fix CN823 - Relationship does not exist

SAP Error Message - Details

• Message type: E = Error

• Message class: CN - Meldungen für Netzpläne

• Message number: 823

• Message text: Relationship does not exist

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 CN823 - Relationship does not exist ?

  The SAP error message CN823 ("Relationship does not exist") typically occurs in the context of project management or network planning within the SAP system, particularly when dealing with the assignment of relationships between activities or elements in a project.
  Cause:
  The error CN823 usually arises due to one of the following reasons:
  
  
  Missing Relationship Definition: The relationship between two activities or elements has not been defined in the system. This could happen if the user attempts to create a dependency between activities that are not linked.
  
  
  Incorrect Activity Status: The activities involved may not be in a status that allows for relationships to be created or modified. For example, if an activity is completed or locked, it may not allow for new relationships.
  
  
  Data Inconsistencies: There may be inconsistencies in the data, such as missing or incorrect entries in the project structure or network.
  
  
  Authorization Issues: The user may not have the necessary permissions to create or modify relationships between activities.
  
  
  Solution:
  To resolve the CN823 error, you can take the following steps:
  
  
  Check Relationship Definition:
  
  Ensure that the relationship you are trying to create is valid. Verify that both activities exist and that they are correctly defined in the system.
  
  
  
  Review Activity Status:
  
  Check the status of the activities involved. If they are not in a suitable status for relationship creation, you may need to change their status or unlock them.
  
  
  
  Validate Data:
  
  Review the project structure and ensure that all necessary data is correctly entered. Look for any missing or incorrect entries that could be causing the issue.
  
  
  
  Check Authorizations:
  
  Ensure that you have the necessary authorizations to create or modify relationships. If not, contact your system administrator to obtain the required permissions.
  
  
  
  Use Transaction Codes:
  
  Use relevant transaction codes (like CJ20N for project management) to navigate to the project or network and check the relationships directly.
  
  
  
  Consult Documentation:
  
  Refer to SAP documentation or help resources for specific guidance on managing relationships in your version of SAP.
  
  
  
  Related Information:
  
  Transaction Codes: Familiarize yourself with transaction codes related to project management, such as CJ01 (Create Work Breakdown Structure), CJ20N (Project Builder), and CN22 (Change Network).
  SAP Notes: Check SAP Notes for any known issues or patches related to the CN823 error.
  User Forums: Engage with SAP community forums or user groups for additional insights and solutions from other users who may have encountered the same issue.
  
  By following these steps, you should be able to identify the cause of the CN823 error and implement a suitable solution.