How To Fix CF021 - Enter a control key.

SAP Error Message - Details

• 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.

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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 choose from predefined options.
  Check Configuration: If you are responsible for system configuration, verify that the control keys are correctly defined in the system. You can check this in the configuration settings under:
  
  SPRO ? Production ? Basic Data ? Control Keys.
  
  
  User Authorization: Ensure that the user has the necessary authorizations to access and modify the control key. If not, contact your SAP security administrator.
  Review Documentation: If you are unsure about which control key to use, refer to your organization's documentation or consult with a colleague who is familiar with the production process.
  
  Related Information:
  
  Control Key Functionality: Control keys in SAP define how operations are processed in production. They determine aspects such as whether an operation is relevant for costing, whether it can be scheduled, and how it interacts with other operations.
  Common Control Keys: Some common control keys include:
  
  PP01: Standard operation
  PP02: External processing
  PP03: In-house production
  
  
  Transaction Codes: Familiarize yourself with relevant transaction codes such as:
  
  CO01: Create Production Order
  CO02: Change Production Order
  CA01: Create Routing
  
  
  
  If the issue persists after following these steps, it may be beneficial to consult with your SAP support team or refer to SAP Notes for any known issues related to this error message.