How To Fix WS379 - Duplicate entry in internal table &1

SAP Error Message - Details

• Message type: E = Error

• Message class: WS - Supplier Billing Document

• Message number: 379

• Message text: Duplicate entry in internal table &1

What causes this issue?

An internal error occurred.

System Response

The system ignores this error are restores the status prior to
archiving.

How to fix this error?

Contact your system administrator.

Procedure for System Administrators

Please contact SAP. Duplicate entries exist in an archiving object.
These are usually due to incorrect documents. If, for example, the
header of a supplier settlement list and a document in this refer to the
same document condition, the document condition is included in the
archiving object twice. Retrieval of data is not affected by this.
The error relates to table &V1&.

Error message extract from SAP system. Copyright SAP SE.

Smart SAP Assistant

• What is the cause and solution for SAP error message WS379 - Duplicate entry in internal table &1 ?

  Certainly! Here's a detailed explanation of the SAP error message WS379 - Duplicate entry in internal table &1:
  
  Error Message
  WS379: Duplicate entry in internal table &1
  
  Cause
  This error occurs when an ABAP program tries to insert or append a record into an internal table that is defined as a sorted or hashed table with a unique key, and the entry being inserted already exists in the table. 
  In other words, the internal table does not allow duplicate entries for the key fields, and the program logic attempts to add a duplicate key, causing the runtime error.
  
  When does it typically occur?
  
  When using INSERT statement on a sorted or hashed internal table with a unique key.
  When using COLLECT or other operations that implicitly try to insert duplicate keys.
  When the program logic does not check for existing entries before inserting.
  When internal tables are used to store unique sets of data but the uniqueness is violated.
  
  
  Solution
  
  
  Check