How To Fix CN866 - Control key & is only for service

CN866 - Overview

• Message type: E = Error

• Message class: CN - Meldungen für Netzpläne

• Message number: 866

• Message text: Control key & is only for service

What causes this issue?

You are maintaining the control key of an externally processed activity.

System Response

The control key you entered is only valid for service activities.

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

How to fix this error?

Select a control key that is not valid for services.
To create a service activity, you must create a new activity.

Error message extract from SAP system. Copyright SAP SE.

CN866 - Details

• The SAP error message CN866 indicates that the control key specified in a transaction is designated for service-related activities only. This means that the control key you are trying to use is not appropriate for the type of operation you are attempting to perform, such as a production order or a different type of activity that is not service-related.
  
  Cause:
  The error occurs when:
  
  You are trying to create or process a production order, maintenance order, or another type of order that is not compatible with the specified control key.
  The control key is configured in the system to be used exclusively for service-related tasks, such as service orders or service confirmations.
  
  
  Solution:
  To resolve this error, you can take the following steps:
  
  
  Check the Control Key: Verify the control key you are using. You can do this by navigating to the relevant configuration settings in SAP (Transaction code OPL8 for control keys) to see the details