How To Fix CNVMBT044 - Masstransfer-Id &1 is already defined in the DTL system

SAP Error Message - Details

• Message type: E = Error

• Message class: CNVMBT - Messages for MBT/API/PCL

• Message number: 044

• Message text: Masstransfer-Id &1 is already defined in the DTL system

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.

Smart SAP Assistant

• What is the cause and solution for SAP error message CNVMBT044 - Masstransfer-Id &1 is already defined in the DTL system ?

  The SAP error message CNVMBT044 indicates that a Mass Transfer ID (Masstransfer-Id) you are trying to use is already defined in the DTL (Data Transfer Layer) system. This typically occurs during data migration or mass data transfer processes when there is an attempt to create or use a Masstransfer ID that already exists.
  
  Cause:
  
  
  Duplicate Masstransfer ID: The most common cause is that the Masstransfer ID you are trying to create or use has already been defined in the system. This can happen if:
  
  The ID was previously created and not deleted.
  There is a naming conflict with another ongoing or completed data transfer process.
  
  
  
  System 
  Configuration Issues: Sometimes, configuration issues or inconsistencies in the DTL settings can lead to this error.
  
  
  
  Solution:
  
  
  Check Existing Masstransfer IDs:
  
  Use transaction code LTMC (for Legacy Transfer Migration Cockpit) or LTMOM (for Migration Object Modeler) to check the existing Masstransfer IDs in the DTL system.
  Look for the Masstransfer ID that is