How To Fix LOP004 - Embedded list item already exists for the reference object key &1

LOP004 - Overview

• Message type: E = Error

• Message class: LOP - Logistical contract options

• Message number: 004

• Message text: Embedded list item already exists for the reference object key &1

Self-Explanatory Message

Since SAP believes that this specific error message is 'self-explanatory,' no more information has been given.The majority of messages in the SAP system have a message text, however this is frequently insufficient to comprehend or resolve the problem.

To make things easier, more detailed information is frequently added to describe the issue, how to fix it, and the necessary steps or configuration modifications.

Unfortunately, there isn't any extra information in this error notice.

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Smart SAP Assistant

• What is the cause and solution for SAP error message LOP004 - Embedded list item already exists for the reference object key &1 ?

  The SAP error message LOP004 indicates that there is an attempt to create or modify an embedded list item in a reference object, but the item already exists. This typically occurs in the context of SAP Logistics or when dealing with embedded lists in various SAP modules.
  
  Cause:
  The error is triggered when:
  
  You are trying to add an item to an embedded list (like a list of items in a sales order, purchase order, etc.) that already contains an entry with the same key.
  The reference object key (&1) indicates the specific object (like a document number or item number) that is causing the conflict.
  
  
  Solution:
  To resolve the LOP004 error, you can take the following steps:
  
  
  Check Existing Entries: 
  
  Review the embedded list for the reference object to see if the item you are trying to add already exists. You can do this by navigating to the relevant transaction and checking the details of the