How To Fix AO223 - You can no longer change the control of number assignment

SAP Error Message - Details

• Message type: E = Error

• Message class: AO - Appropriation requests - Master data / Customizing

• Message number: 223

• Message text: You can no longer change the control of number assignment

What causes this issue?

You want to change the number assignment for the appropriation request
type.
However, appropriation requests have already been created using this
appropriation request type.

System Response

The system does not allow changes to the number assignment if
appropriation requests already exist.
The function cannot be carried out.

How to fix this error?

Check if it is possible to delete the existing appropriation requests
that belong to this appropriation request type. After that you would be
able to change the number assignment.
Or, create a new appropriation request type with the number assignment
you want.

Error message extract from SAP system. Copyright SAP SE.

Smart SAP Assistant

• What is the cause and solution for SAP error message AO223 - You can no longer change the control of number assignment ?

  The SAP error message AO223, which states "You can no longer change the control of number assignment," typically occurs in the context of Asset Accounting (FI-AA) when you attempt to change the number assignment settings for an asset or a group of assets that have already been created or posted.
  Cause:
  The error is triggered because the number assignment control for assets is locked once the asset has been created or has transactions posted against it. This is a safeguard to maintain data integrity and ensure that the asset numbers remain consistent throughout the asset's lifecycle.
  Solution:
  To resolve this error, you can consider the following approaches:
  
  
  Check Asset Status: Ensure that the asset you are trying to modify has not been posted to or is not in use. If it has transactions, you will not be able to change the number assignment.
  
  
  Create New Assets: If you need to change the number assignment control, consider creating new assets with the desired number assignment settings instead of modifying existing ones.
  
  
  Consult with SAP Support: If you believe that the change is necessary and you have a valid business case, consult with your SAP support team or SAP Notes for any potential workarounds or solutions specific to your version of SAP.
  
  
  Review Configuration: If you are an administrator, review the configuration settings in the Asset Accounting module to ensure that the number assignment settings are correctly defined for new assets.
  
  
  Use Transaction Codes: You can use transaction codes like AS01 (Create Asset) or AS02 (Change Asset) to manage assets, but remember that changes to number assignment settings are restricted for existing assets.
  
  
  Related Information:
  
  SAP Notes: Check for any relevant SAP Notes that might provide additional insights or updates regarding this error message.
  Documentation: Review the SAP documentation for Asset Accounting to understand the implications of number assignment and how it affects asset management.
  User Roles: Ensure that you have the appropriate permissions to make changes in the Asset Accounting module, as restrictions may also be related to user roles.
  
  In summary, the AO223 error is a protective measure in SAP to prevent changes to number assignment for assets that are already in use. The best approach is to create new assets if changes are necessary or consult with your SAP support team for further assistance.