Message type: E = Error
Message class: CN - Meldungen für Netzpläne
Message number: 718
Message text: You cannot maintain key & for the constraint
The system automatically sets the key "&V1&" in capacity leveling when
the activity is dispatched. You cannot maintain this key.
INCLUDE 'NA_ALLG_NOVERARBEITUNG' OBJECT DOKU ID TX
Enter a different key for the constraint.
Error message extract from SAP system. Copyright SAP SE.
The SAP error message CN718, which states "You cannot maintain key & for the constraint," typically occurs in the context of project management or network planning within the SAP system, particularly when dealing with constraints in project structures or network activities.
Cause: The error usually arises due to one of the following reasons: Invalid Key: The key you are trying to maintain (e.g., a work breakdown structure (WBS) element, activity, or another identifier) is not valid for the specific constraint you are trying to set. Locked or Inactive Object: The object you are trying to modify may be locked or inactive, preventing any changes. Authorization Issues: You may not have the necessary authorizations to maintain the specified key or constraint. Incorrect Configuration: There may be configuration settings in the project management module that restrict the maintenance of certain keys under specific conditions.
Solution: To resolve the CN718 error, you can take the following steps: Check the Key: Verify that
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