How To Fix V1746 - Item &1 has already been billed. Header exch. rate copied

V1746 - Overview

• Message type: E = Error

• Message class: V1 - Verkaufsbelegbearbeitung

• Message number: 746

• Message text: Item &1 has already been billed. Header exch. rate copied

What causes this issue?

You have changed the currency at header level, whereby the system has
determined that quantities have already been billed for the &V1& items.
&NOTE&
When you change the currency, the exchange rate is copied into all the
items regardless of whether these have been billed or not.
This also means that the data in the Sales Information System (for
example, the incoming order data) is changed. If you do not want this
to happen, you must change the data for the billed items manually, back
to their original values.

Error message extract from SAP system. Copyright SAP SE.

V1746 - Details

• The SAP error message V1746 ("Item &1 has already been billed. Header exch. rate copied") typically occurs in the context of billing documents, particularly when dealing with sales orders or invoices. This error indicates that the item in question has already been billed, and as a result, certain actions cannot be performed on it, such as modifying the billing details or attempting to bill it again.
  
  Cause:
  
  Item Already Billed: The primary cause of this error is that the item has already been processed in a billing document. Once an item is billed, it cannot be billed again unless specific conditions are met (e.g., credit memo, cancellation).
  Exchange Rate Issues: The mention of "Header exch. rate copied" suggests that there may be an issue related to the exchange rate being used for the billing document. If the exchange rate has changed since the original billing, it may lead to complications in processing.
  
  
  Solution:
  
  Check Billing