How To Fix AY203 - You cannot enter "to main number" and "to subnumber" at same time

SAP Error Message - Details

• Message type: E = Error

• Message class: AY - Deprec. simulation - maint. module (AIPS) /gen. master data

• Message number: 203

• Message text: You cannot enter "to main number" and "to subnumber" at same time

What causes this issue?

You entered a main number interval and a sub-number interval at the
same time.
You can distribute either only to main numbers or only to sub-numbers.

How to fix this error?

Delete the "to main number" or "to sub-number."

Error message extract from SAP system. Copyright SAP SE.

Smart SAP Assistant

• What is the cause and solution for SAP error message AY203 - You cannot enter "to main number" and "to subnumber" at same time ?

  The SAP error message AY203, which states "You cannot enter 'to main number' and 'to subnumber' at the same time," typically occurs in the context of asset accounting when you are trying to perform a transaction that involves asset numbers. This error indicates that the system does not allow you to specify both a main asset number and a sub-number in the same transaction.
  Cause:
  The error arises when:
  
  You are trying to enter both a main asset number and a sub-number in a transaction where only one of them is allowed.
  The system is designed to differentiate between main assets and their sub-assets, and it expects you to specify only one at a time.
  
  Solution:
  To resolve this error, you should:
  
  Check Your Input: Review the fields where you are entering the asset information. Ensure that you are only entering either a main asset number or a sub-number, but not both.
  Correct the Transaction: If you need to reference a sub-asset, make sure to clear the main asset number field. Conversely, if you are working with a main asset, ensure that the sub-number field is left blank.
  Review Documentation: If you are unsure about the asset structure, refer to your organization's asset accounting documentation or consult with your SAP administrator for guidance on how to properly enter asset information.
  
  Related Information:
  
  Asset Accounting Configuration: Understanding how your organization has configured asset accounting in SAP can help clarify how main and sub-assets are managed.
  SAP Notes and Documentation: Check SAP Notes for any specific patches or updates related to asset accounting that might address this issue.
  User Training: Ensure that users involved in asset transactions are trained on the correct procedures for entering asset numbers to avoid this error in the future.
  
  If the problem persists after following these steps, it may be beneficial to consult with your SAP support team or a functional consultant who specializes in asset accounting.