How To Fix FKKVT_ILLEGAL_STATE006 - Activity category &1 only allows change type &2

FKKVT_ILLEGAL_STATE006 - Overview

• Message type: E = Error

• Message class: FKKVT_ILLEGAL_STATE - Error category "illegalState"

• Message number: 006

• Message text: Activity category &1 only allows change type &2

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 FKKVT_ILLEGAL_STATE006 - Activity category &1 only allows change type &2 ?

  The SAP error message FKKVT_ILLEGAL_STATE006 indicates that there is an issue with the activity category in the context of contract accounts or billing in the SAP system. Specifically, the message states that the activity category specified (represented by &1) only allows a certain type of change (represented by &2), and the current operation is not permitted.
  
  Cause:
  This error typically arises when:
  
  Incompatible Change Type: The system is trying to perform an operation (like changing or processing a billing document) that is not allowed for the specified activity category. Each activity category has predefined rules about what types of changes can be made.
  
  Configuration Issues: The configuration settings for the activity category may not align with the operations being attempted.
  Data Integrity Issues: There may be inconsistencies or issues with the data being processed, leading to the system rejecting the operation.
  
  
  Solution:
  To resolve this error, you can take the following steps:
  
  
  Check Activity Category: Verify the activity