How To Fix DLCN201 - Corresponding entry already exists in table &1

DLCN201 - Overview

• Message type: E = Error

• Message class: DLCN - DELCON : System Messages for DC / Days'Collective Dely Note

• Message number: 201

• Message text: Corresponding entry already exists in table &1

What causes this issue?

You have tried to add an entry in table &V1&, although an entry already
exists with the same key.

System Response

The entry cannot be inserted.

How to fix this error?

Check the data to be inserted into table &V1& (example: incorrect
number allocation). Otherwise contact your system administrator, as
there is probably an internal error.

Error message extract from SAP system. Copyright SAP SE.

Smart SAP Assistant

• What is the cause and solution for SAP error message DLCN201 - Corresponding entry already exists in table &1 ?

  The SAP error message DLCN201, which states "Corresponding entry already exists in table &1," typically occurs when there is an attempt to create or insert a record in a database table that already has an entry with the same key or unique identifier. This can happen in various scenarios, such as during data uploads, migrations, or when processing transactions.
  
  Cause:
  
  
  Duplicate Entry: The most common cause is that the system is trying to insert a record that already exists in the specified table. This could be due to:
  
  A previous transaction that was not properly completed.
  Data being uploaded that contains duplicates.
  A program or process that is incorrectly attempting to create a record that already exists.
  
  
  
  Data Consistency Issues: There may be inconsistencies in the data being processed, leading to attempts to create duplicate entries.
  
  
  Configuration Errors: Incorrect configuration settings in the system or in the data import process can lead to this error.
  
  
  
  Solution:
  
  
  Check for Existing