How To Fix CNV20400018 - Merges takes place in table &1

CNV20400018 - Overview

• Message type: E = Error

• Message class: CNV20400 - Message class CNV20400

• Message number: 018

• Message text: Merges takes place in table &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.

What else can you do?

First, use our AnswerBot below to get a possible cause and solution (requires a premium subscription).

Also, review the in-depth Common Questions & Answers listed below; you could discover a solution there or be able to connect with others who have faced similar challenges.

You can also try searching the SAP support portal (support.sap.com) but you need a special user ID to access it. It is possible that an SAP support note exists that provides additional details about the mistake or even steps for fixing it.

CNV20400018 - Details

• The SAP error message CNV20400018, which states "Merges take place in table &1," typically occurs during data migration or conversion processes, particularly when using the SAP S/4HANA Migration Cockpit or other data migration tools. This error indicates that there are issues with merging records in a specific database table, which can be due to various reasons such as data inconsistencies, duplicate entries, or incorrect mapping.
  
  Cause:
  
  Duplicate Records: The error often arises when there are duplicate records in the source data that are being processed for migration. The system is unable to merge these records due to conflicts or inconsistencies.
  Data Inconsistencies: If the data being migrated does not conform to the expected format or business rules, it can lead to issues during the merge process.
  Incorrect Mapping: If the mapping of fields from the source to the target table is not correctly defined, it can cause conflicts during the merge operation.
  Referential Integrity Violations: