How To Fix FAA_MD143 - Cannot create sub assets with external subnumbers in asset class &1

SAP Error Message - Details

• Message type: E = Error

• Message class: FAA_MD - Fixed Asset Master

• Message number: 143

• Message text: Cannot create sub assets with external subnumbers in asset class &1

What causes this issue?

You are trying to create sub assets in asset class &V1&. This asset
class only allows external subnumber assignment.
However, creating sub assets with external subnumber assignment is
<ZH>not</> supported in the corresponding SOAP API for asset master data
or in the SAP S/4HANA migration cockpit.

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?

If you want to create sub assets with external subnumber assignment for
this asset class, you can use <LS>Manage Fixed Assets</> app.

Procedure for System Administrators

Error message extract from SAP system. Copyright SAP SE.

Smart SAP Assistant

• What is the cause and solution for SAP error message FAA_MD143 - Cannot create sub assets with external subnumbers in asset class &1 ?

  The SAP error message FAA_MD143 indicates that there is an issue with creating sub-assets in the Asset Accounting (FI-AA) module, specifically when trying to use external subnumbers in an asset class. This error typically arises when the configuration settings for the asset class do not allow for the creation of sub-assets with external subnumbers.
  Cause:
  
  Asset Class Configuration: The asset class specified in the error message does not allow for the creation of sub-assets with external subnumbers. This is usually defined in the configuration settings of the asset class.
  External Number Assignment: The system is trying to assign an external number to a sub-asset, but the asset class is configured to use internal number assignment or does not support external subnumbers.
  Missing Authorizations: In some cases, the user may not have the necessary authorizations to create sub-assets with external subnumbers.
  
  Solution:
  
  
  Check Asset Class Configuration:
  
  Go to the configuration settings for the asset class in transaction code OAOA (or through the IMG path: Financial Accounting (New) > Asset Accounting > Master Data > Define Asset Classes).
  Ensure that the asset class is configured to allow external number assignment for sub-assets. Look for settings related to number assignment and ensure they are set correctly.
  
  
  
  Use Internal Number Assignment:
  
  If the asset class does not support external subnumbers, consider using internal number assignment instead. This may involve changing the way you create sub-assets or adjusting the asset class settings.
  
  
  
  Review User Authorizations:
  
  Check if the user has the necessary authorizations to create sub-assets. This can be done by reviewing the user's roles and authorizations in the system.
  
  
  
  Consult Documentation:
  
  Refer to SAP documentation or consult with your SAP support team for specific guidelines related to asset class configuration and number assignment.
  
  
  
  Testing:
  
  After making any changes, test the creation of sub-assets again to ensure that the error has been resolved.
  
  
  
  Related Information:
  
  Transaction Codes: 
  
  OAOA: Define Asset Classes
  AS01: Create Asset
  AS02: Change Asset
  AS03: Display Asset
  
  
  SAP Notes: Check for any relevant SAP Notes that may address this specific error or provide additional guidance.
  SAP Community: Engage with the SAP Community forums for insights from other users who may have encountered similar issues.
  
  By following these steps, you should be able to resolve the FAA_MD143 error and successfully create sub-assets in the specified asset class.