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