How To Fix MQ150 - You are only allowed to flag one package as "active"

SAP Error Message - Details

• Message type: E = Error

• Message class: MQ - Messages for Euro Changeover Package

• Message number: 150

• Message text: You are only allowed to flag one package as "active"

What causes this issue?

You want to flag a second package as active. Since the
changeover/runtime forecast is always carried out for the active
package, you can only ever activate one package.

System Response

The system issues an error message and will not allow you to continue with this transaction until the error is resolved.

How to fix this error?

Deactivate the active package and activate the one you require.

Error message extract from SAP system. Copyright SAP SE.

Smart SAP Assistant

• What is the cause and solution for SAP error message MQ150 - You are only allowed to flag one package as "active" ?

  The SAP error message MQ150, which states "You are only allowed to flag one package as 'active'," typically occurs in the context of transport management within SAP systems. This error arises when you attempt to set multiple transport requests (packages) as "active" in the same transport layer or system, which is not permitted.
  Cause:
  
  Multiple Active Packages: The primary cause of this error is that there is already one transport request flagged as "active" in the system, and you are trying to activate another one.
  Transport Layer Configuration: The transport layer may be configured in such a way that it only allows one active transport request at a time.
  Incorrect Transport Management: There may be a misunderstanding or mismanagement of the transport requests, leading to attempts to activate more than one at the same time.
  
  Solution:
  
  Check Active Transport Requests: Before attempting to activate a new transport request, check which transport request is currently active. You can do this by using transaction code SE09 or SE10 to view the transport requests.
  Deactivate Existing Active Request: If you find that there is an active transport request that you do not need, you can deactivate it. However, be cautious with this step, as deactivating a transport request may have implications on your development or production environment.
  Activate the Desired Request: Once you have ensured that no other transport requests are active, you can proceed to activate the desired transport request.
  Consult Documentation: If you are unsure about the transport requests and their statuses, consult your SAP transport management documentation or reach out to your SAP Basis team for assistance.
  
  Related Information:
  
  Transport Management System (TMS): Understanding how the TMS works in SAP can help you manage transport requests more effectively.
  Transport Request Types: Familiarize yourself with different types of transport requests (e.g., workbench requests, customizing requests) and their purposes.
  SAP Notes: Check for any relevant SAP Notes that may provide additional insights or solutions related to transport management and error MQ150.
  System Logs: Review system logs for any additional error messages or warnings that may provide context for the issue.
  
  By following these steps, you should be able to resolve the MQ150 error and manage your transport requests effectively.