How To Fix TU526 - Reversal is not possible; billing documents still exist for contract &2

TU526 - Overview

• Message type: E = Error

• Message class: TU - Billing/Scheduling/Budget Billing

• Message number: 526

• Message text: Reversal is not possible; billing documents still exist for contract &2

What causes this issue?

You have tried to reverse a final bill for contract &V1&. This final
bill was generated in a supplier change. You can only reverse the final
bill, when no more valid billing documents exist for subsequent
contract &V2&.
A check determined that at least one unreversed billing document exists
for contract &V2&.

System Response

INCLUDE ISU_VERARB OBJECT DOKU ID TX

How to fix this error?

Reverse all billing documents for contract &V2&.
Reverse the final bill for contract &V1&.

Procedure for System Administrators

The system issues an error message and will not allow you to continue with this transaction until the error is resolved.

Error message extract from SAP system. Copyright SAP SE.

Smart SAP Assistant

• What is the cause and solution for SAP error message TU526 - Reversal is not possible; billing documents still exist for contract &2 ?

  The SAP error message TU526 indicates that a reversal operation cannot be performed because there are still billing documents associated with the contract in question. This typically occurs in the context of contract management or billing processes within SAP, where certain actions are restricted if there are dependent documents that could be affected by the reversal.
  
  Cause:
  
  Existing Billing Documents: The primary cause of this error is that there are one or more billing documents that have been created against the contract you are trying to reverse. These documents may include invoices, credit memos, or other billing-related documents.
  Contract Status: The status of the contract may also prevent reversal if it is still active or if it has been processed in a way that ties it to the billing documents.
  Dependencies: There may be dependencies in the system that require the billing documents to be addressed before the contract can be reversed.
  
  
  Solution:
  To resolve the