How To Fix CNV_NCE_BAS240 - NR interval &1: duplicate entries exist

CNV_NCE_BAS240 - Overview

• Message type: E = Error

• Message class: CNV_NCE_BAS - Number conversion engine: messages

• Message number: 240

• Message text: NR interval &1: duplicate entries exist

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.

CNV_NCE_BAS240 - Details

• The SAP error message CNV_NCE_BAS240 NR interval &1: duplicate entries exist 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 duplicate entries in the data being processed, which violates the uniqueness constraints expected by the system.
  
  Cause:
  
  
  Duplicate Data: The most common cause of this error is that the data being imported or converted contains duplicate entries for a specific key or interval. This could be due to:
  
  Data extraction issues where the source system had duplicates.
  Incorrect mapping or transformation rules that lead to duplicates.
  Manual data entry errors in the source data.
  
  
  
  
  Configuration Issues: Sometimes, the configuration of the target system may expect unique values for certain fields, and if the incoming data does not meet these requirements, it can trigger this error.
  
  
  
  Solution:
  
  
  Identify Duplicates: 
  
  Review the data set that is being imported or converted. Use tools