How To Fix KK601 - Internal error: Transaction type & invalid

SAP Error Message - Details

• Message type: E = Error

• Message class: KK -

• Message number: 601

• Message text: Internal error: Transaction type & invalid

What causes this issue?

Because of an internal error, the &v1& of the cost estimate was not
possible.

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?

Please inform 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 KK601 - Internal error: Transaction type & invalid ?

  The SAP error message KK601, which states "Internal error: Transaction type & invalid," typically occurs in the context of controlling (CO) transactions, particularly when dealing with internal orders, cost centers, or other controlling-related activities. This error indicates that the system has encountered an issue with the transaction type being used in the process.
  Causes:
  
  Invalid Transaction Type: The transaction type specified in the transaction is not recognized by the system. This could be due to a typo or an incorrect configuration.
  Configuration Issues: The transaction type may not be properly configured in the system. This could involve missing settings in the controlling area or the transaction type itself.
  Authorization Issues: The user may not have the necessary authorizations to use the specified transaction type.
  System Bugs: Occasionally, this error can arise from bugs or inconsistencies in the SAP system, especially if there have been recent updates or changes.
  
  Solutions:
  
  Check Transaction Type: Verify that the transaction type being used is valid and correctly entered. Ensure there are no typos or incorrect codes.
  Configuration Review: Review the configuration settings for the transaction type in the controlling area. Ensure that it is set up correctly in the system.
  
  You can check this in the configuration settings under SPRO > Controlling > Internal Orders > Order Types.
  
  
  Authorization Check: Ensure that the user has the necessary authorizations to perform the transaction with the specified transaction type. This can be checked with the help of your SAP security team.
  Consult SAP Notes: Check the SAP Support Portal for any relevant SAP Notes that might address this specific error. There may be patches or updates available that resolve the issue.
  System Logs: Review system logs (transaction SLG1) for any additional error messages or information that could provide more context about the issue.
  Contact SAP Support: If the issue persists after checking the above points, consider reaching out to SAP support for further assistance.
  
  Related Information:
  
  Transaction Codes: Familiarize yourself with relevant transaction codes in the CO module, such as KO01 (Create Internal Order), KO02 (Change Internal Order), and KO03 (Display Internal Order).
  Documentation: Review SAP documentation related to controlling and internal orders for more insights into transaction types and their configurations.
  User Forums: Engage with SAP community forums or user groups where similar issues may have been discussed, and solutions shared.
  
  By following these steps, you should be able to identify and resolve the cause of the KK601 error in your SAP system.