How To Fix CN306 - Cannot change actual date; activity/element & not (finally) confirmed

CN306 - Overview

• Message type: E = Error

• Message class: CN - Meldungen für Netzpläne

• Message number: 306

• Message text: Cannot change actual date; activity/element & not (finally) confirmed

What causes this issue?

The activity or the activity element has not been confirmed, neither
partially or finally.

System Response

The actual dates and times cannot be changed..

How to fix this error?

Create a confirmation for the activity or activity element

Procedure for System Administrators

The system issues an error message and will not allow you to continue with this transaction until the error is resolved.

Error message extract from SAP system. Copyright SAP SE.

CN306 - Details

• The SAP error message CN306 indicates that you are trying to change the actual date of an activity or element that has not been finally confirmed. This typically occurs in the context of project management and controlling within SAP, particularly when dealing with network activities in Project System (PS) or production orders in Controlling (CO).
  
  Cause:
  
  Activity Not Finally Confirmed: The activity or element you are trying to change has not been marked as finally confirmed. In SAP, once an activity is finally confirmed, certain changes to its actual dates are restricted to maintain data integrity.
  Status of the Activity: The status of the activity may not allow changes to the actual dates. For example, if the activity is in a status that prevents changes, you will encounter this error.
  System Settings: There may be system settings or configurations that restrict changes to actual dates for certain types of activities or elements.
  
  
  Solution:
  
  Confirm the Activity: