How To Fix AJ103 - Portion has been changed within the backbilling period

AJ103 - Overview

• Message type: E = Error

• Message class: AJ - Billing program

• Message number: 103

• Message text: Portion has been changed within the backbilling period

What causes this issue?

You changed the portion from &v1& to &v2& for the contract. You made
this change within a backbilling period. However, you are not permitted
to change the portion within a backbilling period.

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?

Ensure that the portion does not change within the backbilling period.
The current backbilling period started on &v3&. If you wish to allocate
the contract to a different portion, you can do this after the end of
the backbilling period.

Error message extract from SAP system. Copyright SAP SE.

Smart SAP Assistant

• What is the cause and solution for SAP error message AJ103 - Portion has been changed within the backbilling period ?

  The SAP error message AJ103, which states "Portion has been changed within the backbilling period," typically occurs in the context of billing and invoicing processes, particularly when dealing with adjustments or changes to billing data that fall within a defined backbilling period.
  
  Cause:
  The error is triggered when there is an attempt to change a portion of a billing document (such as a contract, invoice, or other financial document) that has already been finalized or is within a period where backbilling is not allowed. This is often due to:
  
  Regulatory Constraints: Many organizations have policies or regulations that limit the time frame in which billing adjustments can be made.
  System Configuration: The SAP system may be configured to prevent changes to billing documents once they have been posted or finalized within a certain time frame.
  Data Integrity: The system is designed to maintain data integrity and prevent inconsistencies that could arise from retroactive changes.
  
  
  Solution:
  To resolve