How To Fix CJ161 - Activity cannot be scheduled. Control key does not allow scheduling

SAP Error Message - Details

• Message type: E = Error

• Message class: CJ - Project master data and structure

• Message number: 161

• Message text: Activity cannot be scheduled. Control key does not allow scheduling

What causes this issue?

The activity was not scheduled because the control key for this
activity does not permit scheduling.

System Response

INCLUDE 'NA_ALLG_NOFUNKTION' OBJECT DOKU ID TX LANGUAGE E

How to fix this error?

On the detail screen for the activity, enter a control key that allows
scheduling.
You can change the control key itself in Customizing for the Project
System.

Error message extract from SAP system. Copyright SAP SE.

Smart SAP Assistant

• What is the cause and solution for SAP error message CJ161 - Activity cannot be scheduled. Control key does not allow scheduling ?

  The SAP error message CJ161, which states "Activity cannot be scheduled. Control key does not allow scheduling," typically occurs in the context of project management within SAP, particularly when dealing with project activities in the Project System (PS) module. This error indicates that the control key assigned to the activity does not permit scheduling.
  
  Cause:
  The primary causes of this error include:
  
  
  Control Key Settings: The control key assigned to the activity does not allow for scheduling. Control keys define how activities are processed and can restrict certain functionalities, including scheduling.
  
  
  Activity Type: The activity type associated with the control key may not be set up to allow scheduling.
  
  
  Project Structure: The project structure or hierarchy may have restrictions that prevent scheduling for certain activities.
  
  
  Missing Parameters: Required parameters for scheduling may not be set up correctly in the project or activity.
  
  
  
  Solution:
  To resolve the CJ161 error, you can take the following steps:
  
  
  Check Control Key:
  
  Go to the