How To Fix DMC_MDS_MAINT_EVENT149 - A transport already exists in the not yet completed maintenance event &1

SAP Error Message - Details

• Message type: E = Error

• Message class: DMC_MDS_MAINT_EVENT - message class for dynamic maint event proc

• Message number: 149

• Message text: A transport already exists in the not yet completed maintenance event &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.

Smart SAP Assistant

• What is the cause and solution for SAP error message DMC_MDS_MAINT_EVENT149 - A transport already exists in the not yet completed maintenance event &1 ?

  The SAP error message DMC_MDS_MAINT_EVENT149 indicates that there is an issue with a maintenance event in the Data Migration Cockpit (DMC) where a transport request already exists for a maintenance event that has not yet been completed. This can occur during the process of managing data migration tasks, particularly when trying to create or modify a maintenance event.
  Cause:
  The error typically arises due to one of the following reasons:
  
  Existing Transport Request: A transport request has already been created for the maintenance event you are trying to work on, and it has not yet been released or completed.
  Concurrent Processes: Another user or process might be working on the same maintenance event, leading to conflicts.
  System Configuration Issues: There may be configuration issues or inconsistencies in the system that prevent the maintenance event from being processed correctly.
  
  Solution:
  To resolve this error, you can follow these steps:
  
  
  Check Existing Transport Requests:
  
  Go to the Transport Organizer (transaction code SE09 or SE10) and check if there are any transport requests associated with the maintenance event in question.
  If a transport request exists, determine its status (e.g., whether it is released or still in process).
  
  
  
  Release or Complete the Transport Request:
  
  If the transport request is still in process, you may need to complete or release it before you can proceed with the maintenance event.
  If you have the necessary authorizations, you can release the transport request.
  
  
  
  Consult with Team Members:
  
  If you suspect that another user is working on the same maintenance event, communicate with your team to coordinate efforts and avoid conflicts.
  
  
  
  Check for Locks:
  
  Use transaction code SM12 to check for any locks on the maintenance event. If there are locks, you may need to resolve them before proceeding.
  
  
  
  Review System Logs:
  
  Check the system logs (transaction code SLG1) for any additional error messages or warnings that might provide more context about the issue.
  
  
  
  Contact SAP Support:
  
  If the issue persists after trying the above steps, consider reaching out to SAP support for further assistance. Provide them with the error message and any relevant details about the maintenance event.
  
  
  
  Related Information:
  
  Transaction Codes: SE09, SE10 (Transport Organizer), SM12 (Lock Entries), SLG1 (Application Log).
  SAP Notes: Check for any relevant SAP Notes that might address this specific error or provide additional troubleshooting steps.
  Documentation: Review the official SAP documentation for the Data Migration Cockpit for best practices and guidelines on managing maintenance events and transport requests.
  
  By following these steps, you should be able to identify the cause of the error and take appropriate action to resolve it.