How To Fix AH385 - Installation &1: contract &2 must be billed first

AH385 - Overview

• Message type: E = Error

• Message class: AH - IS-U billing (master data)

• Message number: 385

• Message text: Installation &1: contract &2 must be billed first

What causes this issue?

You have attempted to bill contract &v3& for installation &v1&. This is
not possible because contract &v2& was already allocated to the
installation, and final billing has not been executed yet for this
contract.

System Response

How to fix this error?

First execute final billing for contract &v2&. Then you can bill
contract &v3&.

Error message extract from SAP system. Copyright SAP SE.

AH385 - Details

• The SAP error message AH385 indicates that there is a billing issue related to a contract in the system. Specifically, it means that a certain contract must be billed before the installation can proceed. This error typically arises in the context of SAP's Contract Accounts Receivable and Payable (FI-CA) or in the context of billing processes in SAP IS-U (Industry Solution for Utilities).
  
  Cause:
  
  Billing Sequence: The error occurs when there is a defined billing sequence that requires a specific contract to be billed before the installation can be processed. This is often due to dependencies between contracts and installations.
  Contract Status: The contract in question may not be in a status that allows it to be billed (e.g., it may be inactive or not fully set up).
  
  Configuration Issues: There may be configuration settings in the system that dictate the billing order, which could be causing this error.
  
  
  Solution:
  
  Check Contract Status: Verify the status