How To Fix SQ037 - Undefined queue type

SAP Error Message - Details

• Message type: E = Error

• Message class: SQ - Queue Administration Transaction: Error Texts

• Message number: 037

• Message text: Undefined queue type

What causes this issue?

Type of queue not defined.

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?

Queue must be flagged as
A - Appendable or
U - Unique

Error message extract from SAP system. Copyright SAP SE.

Smart SAP Assistant

• What is the cause and solution for SAP error message SQ037 - Undefined queue type ?

  The SAP error message SQ037, which states "Undefined queue type," typically occurs in the context of SAP's queuing and messaging systems, particularly when working with SAP's Application Link Enabling (ALE) or other messaging frameworks. This error indicates that the system is trying to reference a queue type that has not been defined or is not recognized by the system.
  Causes:
  
  Incorrect Configuration: The queue type may not be properly configured in the system. This could be due to missing entries in the relevant configuration tables.
  Typographical Errors: There may be a typo in the queue type name or identifier being referenced in the configuration or code.
  Missing Customization: If you are using a custom queue type, it may not have been created or activated in the system.
  Transport Issues: If the configuration was transported from another system, the transport may not have included all necessary objects or settings.
  
  Solutions:
  
  
  Check Configuration: 
  
  Go to transaction SMQ1 (for outbound queues) or SMQ2 (for inbound queues) and check the configuration of the queues.
  Ensure that the queue type you are trying to use is defined and active.
  
  
  
  Verify Queue Type:
  
  Use transaction SPRO to navigate to the relevant configuration settings for your application and verify that the queue type is defined correctly.
  Check the relevant customizing settings for ALE or the specific application you are working with.
  
  
  
  Correct Typographical Errors:
  
  Review the code or configuration where the queue type is referenced to ensure there are no typos or incorrect identifiers.
  
  
  
  Create or Activate Queue Type:
  
  If the queue type is custom and not defined, you may need to create it in the system. This can involve defining the queue type in the relevant customizing settings.
  
  
  
  Transport Check:
  
  If the issue arose after a transport, check the transport logs to ensure that all necessary objects were included and that there were no errors during the transport process.
  
  
  
  Consult Documentation:
  
  Review SAP documentation or notes related to the specific application or module you are working with for any additional guidance on queue types.
  
  
  
  Related Information:
  
  SAP Notes: Check SAP Notes for any known issues or patches related to the error message SQ037. You can search for relevant notes in the SAP Support Portal.
  Community Forums: Consider checking SAP Community forums or other user groups for similar issues and solutions shared by other users.
  Transaction Codes: Familiarize yourself with relevant transaction codes such as SMQ1, SMQ2, SPRO, and others that may help in diagnosing and resolving the issue.
  
  If the problem persists after trying the above solutions, it may be beneficial to engage with your SAP Basis team or SAP support for further assistance.