How To Fix CF021 - Enter a control key.

CF021 - Overview

• Message type: E = Error

• Message class: CF - PRT management messages

• Message number: 021

• Message text: Enter a control key.

Self-Explanatory Message

Since SAP believes that this specific error message is 'self-explanatory,' no more information has been given.The majority of messages in the SAP system have a message text, however this is frequently insufficient to comprehend or resolve the problem.

To make things easier, more detailed information is frequently added to describe the issue, how to fix it, and the necessary steps or configuration modifications.

Unfortunately, there isn't any extra information in this error notice.

What else can you do?

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Smart SAP Assistant

• What is the cause and solution for SAP error message CF021 - Enter a control key. ?

  The SAP error message CF021, which states "Enter a control key," typically occurs in the context of production planning or when working with production orders, routing, or similar processes in SAP. This error indicates that a control key, which is essential for defining how a particular operation or process should be executed, has not been entered or is missing.
  
  Cause:
  
  Missing Control Key: The most common cause is that the control key field is left blank when creating or modifying a production order, routing, or operation.
  Incorrect Configuration: The control key may not be properly configured in the system, or the user may not have the necessary authorizations to access or modify the control key.
  Data Entry Error: Users may inadvertently skip the control key field during data entry.
  
  
  Solution:
  
  Enter Control Key: Ensure that you enter a valid control key in the relevant field. The control key is usually a dropdown selection, so you can