How To Fix CNV_MBT288 - Subproject &1 for DTL does not exist

SAP Error Message - Details

• Message type: E = Error

• Message class: CNV_MBT - PCL message class

• Message number: 288

• Message text: Subproject &1 for DTL does not 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.

Smart SAP Assistant

• What is the cause and solution for SAP error message CNV_MBT288 - Subproject &1 for DTL does not exist ?

  The SAP error message CNV_MBT288 indicates that a subproject specified in the Data Transfer Layer (DTL) does not exist. This error typically arises during data migration or conversion processes, particularly when using SAP's Migration Cockpit or other data migration tools.
  Cause:
  
  Missing Subproject: The specified subproject in the error message has not been created or is not available in the system.
  Incorrect Configuration: There may be a misconfiguration in the migration project settings, leading to the system not recognizing the subproject.
  Authorization Issues: The user executing the migration may not have the necessary authorizations to access the specified subproject.
  Data Transfer Layer Issues: The DTL might not be properly set up or might have been deleted or modified incorrectly.
  
  Solution:
  
  
  Check Subproject Existence:
  
  Verify that the subproject mentioned in the error message exists in the system. You can do this by navigating to the relevant transaction or using the appropriate report to list available subprojects.
  
  
  
  Create or Restore Subproject:
  
  If the subproject does not exist, you may need to create it. Follow the necessary steps in your migration tool to set up the subproject correctly.
  If it was deleted, check if you can restore it from a backup or recreate it based on the previous configuration.
  
  
  
  Review Configuration:
  
  Ensure that the configuration settings for the migration project are correct. This includes checking the mapping and settings related to the DTL.
  
  
  
  Check Authorizations:
  
  Ensure that the user executing the migration has the necessary authorizations to access the subproject. You may need to consult with your SAP security team to verify and adjust user roles if necessary.
  
  
  
  Consult Documentation:
  
  Refer to the SAP documentation related to the specific migration tool you are using. This may provide additional insights or steps to resolve the issue.
  
  
  
  SAP Notes and Support:
  
  Check for any relevant SAP Notes that might address this specific error. You can search the SAP Support Portal for updates or patches that may resolve known issues.
  
  
  
  Related Information:
  
  Transaction Codes: Familiarize yourself with transaction codes related to data migration, such as LTMC (for Migration Cockpit) or LTMOM (for Migration Object Modeler).
  Migration Cockpit: Understand how the Migration Cockpit works, including the structure of projects and subprojects.
  SAP Community: Engage with the SAP Community forums to see if other users have encountered similar issues and what solutions they found effective.
  
  If the problem persists after trying the above solutions, consider reaching out to SAP support for further assistance.