How To Fix CN197 - Successor or predecesor in relationships cannot be changed

CN197 - Overview

• Message type: E = Error

• Message class: CN - Meldungen für Netzpläne

• Message number: 197

• Message text: Successor or predecesor in relationships cannot be changed

What causes this issue?

You cannot change the predecessor and sucessor in relationships.

System Response

INCLUDE 'NA_ALLG_NOFUNKTION' OBJECT DOKU ID TX

How to fix this error?

Delete the realtionship and create a new one with the changed values.

Error message extract from SAP system. Copyright SAP SE.

Smart SAP Assistant

• What is the cause and solution for SAP error message CN197 - Successor or predecesor in relationships cannot be changed ?

  The SAP error message CN197, which states "Successor or predecessor in relationships cannot be changed," typically occurs in the context of project management and network planning within SAP. This error indicates that there is an issue with modifying the relationships between activities in a project network.
  
  Cause:
  
  Locked Relationships: The relationships between activities (successors and predecessors) may be locked due to the project being in a certain status (e.g., released or completed).
  Dependencies: The system may not allow changes to relationships if there are dependencies that would be violated by the change.
  Project Status: If the project is in a status that does not allow changes (like "Released"), you will not be able to modify the relationships.
  Network Type: Certain types of networks or activities may have restrictions on changing relationships.
  User Authorizations: The user may not have the necessary authorizations to make changes to the project network.
  
  
  Solution:
  
  Check Project Status: Ensure that the project is not