How To Fix CA_TTE699 - Duplicate item number &1 in item &2 and item &3

CA_TTE699 - Overview

• Message type: E = Error

• Message class: CA_TTE - TTE Messages

• Message number: 699

• Message text: Duplicate item number &1 in item &2 and item &3

What causes this issue?

The item numbers of the items which were being sent via the COM_TAX
interface to the external tax system are the same.
The COM_TAX interface expects item numbers of length 6 characters. So,
if the item number supplied by the document is longer the 6 characters,
TTE selects the last 6 characters before sending to the external tax
system.

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?

If the item numbers of the items in the document are less than 6
characters long, please ensure that the item numbers are unique. If the
item numbers are longer than 6 characters, please ensure that the last 6
characters are unique.

Procedure for System Administrators

Error message extract from SAP system. Copyright SAP SE.

CA_TTE699 - Details

• The SAP error message CA_TTE699 "Duplicate item number &1 in item &2 and item &3" typically occurs in the context of transaction processing where duplicate entries are not allowed. This error indicates that there are two items in a document (like a purchase order, sales order, or similar) that have the same item number, which is causing a conflict.
  
  Cause:
  
  Duplicate Entries: The most common cause is that the same item number has been entered multiple times in the same document or transaction.
  Data Migration Issues: If data has been migrated from another system, it’s possible that duplicates were introduced during the migration process.
  User Error: Users may inadvertently enter the same item multiple times when creating or editing a document.
  
  
  Solution:
  
  Review the Document: Check the document where the error occurred. Look for the items listed and identify the duplicates.
  Remove Duplicates: If you find duplicate item numbers, remove or correct the duplicates so that each