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

SAP Error Message - Details

• 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 the AJ103 error, consider the following steps:
  
  
  Review the Backbilling Period: Check the configuration settings for the backbilling period in your SAP system. This can usually be found in the billing or invoicing settings. Ensure that the changes you are trying to make fall outside of this period.
  
  
  Adjust the Document: If the changes are necessary, you may need to create a new document or adjustment entry that reflects the changes rather than modifying the existing document.
  
  
  Consult with Finance/Compliance Teams: If the changes are critical, consult with your finance or compliance teams to understand the implications of making changes within the backbilling period and whether any exceptions can be made.
  
  
  Use Transaction Codes: Depending on your role and permissions, you may need to use specific transaction codes (like VF02 for changing billing documents) to attempt to make the necessary adjustments.
  
  
  Check for Open Items: Ensure there are no open items or pending transactions that might be causing the error. Sometimes, related documents or transactions can affect the ability to make changes.
  
  
  SAP Notes and Support: If the issue persists, check SAP Notes for any known issues or patches related to this error. You may also consider reaching out to SAP support for assistance.
  
  
  Related Information:
  
  Backbilling Period Configuration: This is typically set in the SAP system under billing configuration settings. It defines how far back adjustments can be made.
  Billing Document Types: Different types of billing documents may have different rules regarding changes and adjustments.
  User Roles and Permissions: Ensure that the user attempting to make the changes has the appropriate permissions to modify billing documents.
  
  By following these steps, you should be able to address the AJ103 error effectively.