How To Fix KO809 - Enter group box & only once

SAP Error Message - Details

• Message type: E = Error

• Message class: KO - Master data for CO orders

• Message number: 809

• Message text: Enter group box & only once

What causes this issue?

You have used group box &V1& several times in layout &V2&.

System Response

Each group box (except user-defined group box 09) can be used only once
for each order layout.

How to fix this error?

Enter a different group box or delete the incorrect entries. To delete
entries following an error message, you must first remove the group box
for the rows concerned.
If you are just about to create new entries, it could be better not to
enter any group boxes just yet. You can fill these later.

Error message extract from SAP system. Copyright SAP SE.

Smart SAP Assistant

• What is the cause and solution for SAP error message KO809 - Enter group box & only once ?

  The SAP error message KO809 ("Enter group box & only once") typically occurs in the context of SAP Controlling (CO) when you are trying to create or modify a cost center or internal order and you have entered a group box (or group of related fields) more than once in the same transaction.
  Cause:
  The error is triggered because the system expects each group box to be defined only once in the context of the transaction. This is a validation rule in SAP to ensure data integrity and avoid confusion in the data entry process.
  Solution:
  To resolve this error, you should:
  
  
  Review Your Input: Check the fields you have filled out in the transaction. Look for any group box that you may have inadvertently filled out more than once. 
  
  
  Remove Duplicate Entries: If you find that you have entered data in the same group box multiple times, remove the duplicate entries. Ensure that each group box is filled out only once.
  
  
  Consult Documentation: If you are unsure about the structure of the transaction or the fields, refer to the SAP documentation or help files related to the specific transaction you are working with.
  
  
  Check for Customizations: If your organization has customized the SAP system, there may be additional rules or validations in place. Consult with your SAP administrator or support team for guidance.
  
  
  Test Changes: After making the necessary adjustments, try to save or process the transaction again to see if the error persists.
  
  
  Related Information:
  
  Transaction Codes: This error can occur in various transaction codes related to cost accounting, such as KSB1 (Cost Centers: Actual Line Items), KSU5 (Create/Change Cost Center), etc.
  SAP Notes: Check SAP Notes for any known issues or patches related to this error message. You can search the SAP Support Portal for relevant notes.
  User Training: Ensure that users are trained on the correct data entry procedures to minimize the occurrence of this error in the future.
  
  If the problem persists after following these steps, it may be beneficial to reach out to your SAP support team for further assistance.