How To Fix CN336 - Event is referenced completely. Manual maintenance not possible

CN336 - Overview

• Message type: E = Error

• Message class: CN - Meldungen für Netzpläne

• Message number: 336

• Message text: Event is referenced completely. Manual maintenance not possible

What causes this issue?

You want to maintain dates for an event to which existing system fields
have been assigned for all date types.

System Response

Consequently you cannot maintain the dates manually.

How to fix this error?

In Customizing check the <DS:SIMG.SIMG_OLPR_TCNTM01F>Assignment of
Events to Reference Dates</>.

Error message extract from SAP system. Copyright SAP SE.

Smart SAP Assistant

• What is the cause and solution for SAP error message CN336 - Event is referenced completely. Manual maintenance not possible ?

  The SAP error message CN336: Event is referenced completely. Manual maintenance not possible typically occurs in the context of project management and network planning within SAP, particularly in the Project System (PS) module. This error indicates that the event you are trying to modify or maintain is already fully referenced by other objects, such as activities or milestones, and therefore cannot be changed manually.
  
  Cause:
  
  Complete Referencing: The event is fully referenced by other elements in the project, meaning that it is linked to activities or other events that have already been scheduled or completed.
  Status of the Project: The project or network might be in a status that does not allow for manual changes, such as being released or completed.
  Dependencies: There may be dependencies or constraints that prevent changes to the event.
  
  
  Solution:
  
  Check References: Review the project structure to identify which activities or elements are referencing the event. You can do this by