How To Fix KK020 - Internal error: & is not a valid activity type

SAP Error Message - Details

• Message type: E = Error

• Message class: KK -

• Message number: 020

• Message text: Internal error: & is not a valid activity type

What causes this issue?

The &v1& of the cost estimate was not possible because of an internal
error.

System Response

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?

Notify your system administrator.

Error message extract from SAP system. Copyright SAP SE.

Smart SAP Assistant

• What is the cause and solution for SAP error message KK020 - Internal error: & is not a valid activity type ?

  The SAP error message KK020, which states "Internal error: & is not a valid activity type," typically occurs in the context of controlling (CO) when working with activity types in cost centers or internal orders. This error indicates that the system is unable to recognize the specified activity type, which can be due to several reasons.
  Causes:
  
  Invalid Activity Type: The activity type specified in the transaction does not exist in the system or is not defined correctly.
  Inactive Activity Type: The activity type may exist but is not active for the period in question.
  Configuration Issues: There may be issues with the configuration of the controlling area or the activity type itself.
  Authorization Issues: The user may not have the necessary authorizations to access the specified activity type.
  Data Entry Errors: There could be a typographical error in the activity type entered.
  
  Solutions:
  
  
  Check Activity Type: Verify that the activity type you are trying to use is correctly defined in the system. You can do this by navigating to the configuration settings for activity types in the controlling module.
  
  Transaction Code: KP26 (for maintaining activity types) or OKA1 (for defining activity types).
  
  
  
  Activate Activity Type: If the activity type exists but is inactive, you may need to activate it for the relevant controlling area and period.
  
  Ensure that the activity type is assigned to the correct cost center or internal order.
  
  
  
  Review Configuration: Check the configuration settings for the controlling area to ensure that everything is set up correctly. This includes verifying that the activity type is assigned to the correct cost center or internal order.
  
  
  Check Authorizations: Ensure that the user has the necessary authorizations to access and use the specified activity type. This may involve checking user roles and permissions.
  
  
  Correct Data Entry: Double-check the input for any typographical errors. Ensure that the activity type is entered correctly in the transaction.
  
  
  Consult Documentation: If the issue persists, refer to SAP documentation or consult with your SAP support team for further assistance.
  
  
  Related Information:
  
  Transaction Codes: Familiarize yourself with relevant transaction codes such as KP26 (Maintain Activity Types), OKA1 (Define Activity Types), and KSU5 (Display Activity Type).
  SAP Notes: Check SAP Notes for any known issues or patches related to this error message.
  User Forums: Consider visiting SAP community forums or support sites for additional insights and solutions from other users who may have encountered similar issues.
  
  By following these steps, you should be able to identify and resolve the cause of the KK020 error in SAP.