How To Fix AJ650 - You changed billing-specific data before the last billing (&1)

SAP Error Message - Details

• Message type: E = Error

• Message class: AJ - Billing program

• Message number: 650

• Message text: You changed billing-specific data before the last billing (&1)

What causes this issue?

The installation has already been billed. You can no longer change the
history of the following data (depending on the reference value type)
before this date:
Entry value
Value to be billed
Rate type
Rate fact group
Amount
Currency
Repeat factor (number of containers)
Container portion
Property portion
Container category
Property

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?

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 AJ650 - You changed billing-specific data before the last billing (&1) ?

  The SAP error message AJ650 indicates that there has been a change to billing-specific data in a sales document (like a sales order or contract) after the last billing has occurred. This error typically arises in the context of billing processes in SAP, particularly when using the SD (Sales and Distribution) module.
  
  Cause:
  The error occurs because SAP enforces data integrity and consistency in billing processes. When billing-specific data (such as pricing, conditions, or terms) is modified after the last billing document has been created, it can lead to inconsistencies in the billing history and financial reporting. Therefore, SAP prevents further processing until the issue is resolved.
  
  Solution:
  To resolve the AJ650 error, you can take the following steps:
  
  
  Check Last Billing Document: Identify the last billing document created for the sales order or contract. You can do this by checking the billing history in the sales document.
  
  
  Review Changes: Determine what specific billing-related data was