How To Fix SWF_XI_ADAPTER420 - Queue &1 is not registered; check your entries are correct

SAP Error Message - Details

• Message type: E = Error

• Message class: SWF_XI_ADAPTER - XI BPM: Messages

• Message number: 420

• Message text: Queue &1 is not registered; check your entries are correct

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

What causes this issue?

The queue you have specified is not registered. This could imply that
the queue name is incorrect.

System Response

How to fix this error?

Cancel message display by choosing 'Cancel'. The system returns to the
list of inbound queues; check the entries for errors.
Confirm that the entries are correct by choosing 'Continue'. The system
then begins to reconfigure inbound processing.
<ZH>Note:</>
<ZH>Incorrect inbound queues may result in data loss in message
processing.</>
<ZH>Inbound processing can only be reconfigured when all corresponding
inbound queues are registered. For this reason, SAP recommends that you
register all queues as soon as you start reconfiguration. To avoid
processing inconsistencies, do not ignore this warning. Only start
reconfiguration once all inbound queues have been registered. </>

Procedure for System Administrators

Error message extract from SAP system. Copyright SAP SE.

Smart SAP Assistant

• What is the cause and solution for SAP error message SWF_XI_ADAPTER420 - Queue &1 is not registered; check your entries are correct ?

  The SAP error message SWF_XI_ADAPTER420 indicates that a specific queue is not registered in the system. This error typically occurs in the context of SAP Process Integration (PI) or SAP Process Orchestration (PO) when there is an issue with the configuration of the queues used for message processing.
  Cause:
  
  Queue Not Registered: The specified queue (indicated by &1 in the error message) is not registered in the SAP system. This can happen if the queue was not created, was deleted, or if there is a misconfiguration.
  Incorrect Configuration: The configuration settings for the queue might be incorrect, leading to the system being unable to recognize it.
  Transport Issues: If the configuration was transported from one system to another, there might have been issues during the transport process that led to the queue not being properly registered.
  System Issues: There could be underlying system issues, such as database problems or inconsistencies in the messaging framework.
  
  Solution:
  
  
  Check Queue Registration:
  
  Go to the SAP PI/PO system and check if the queue is registered. You can do this by navigating to the relevant transaction (e.g., SXMB_MONI for monitoring) and checking the queue settings.
  Use transaction SMQ1 (for outbound queues) or SMQ2 (for inbound queues) to check the status of the queues.
  
  
  
  Recreate the Queue:
  
  If the queue is not found, you may need to recreate it. This can typically be done through the configuration settings in the Integration Directory or by using the appropriate transaction codes.
  
  
  
  Check Configuration:
  
  Review the configuration settings for the integration scenario that is using the queue. Ensure that all entries are correct and that the queue is properly referenced.
  
  
  
  Transport Issues:
  
  If the issue arose after a transport, check the transport logs for any errors. You may need to re-transport the configuration or manually adjust the settings in the target system.
  
  
  
  System Health Check:
  
  Perform a health check of the SAP system to ensure that there are no underlying issues affecting the messaging framework. This may include checking database connections, system logs, and other relevant components.
  
  
  
  Consult Documentation:
  
  Refer to SAP documentation or notes related to the specific version of SAP PI/PO you are using for any known issues or additional troubleshooting steps.
  
  
  
  Related Information:
  
  SAP Notes: Check SAP Notes for any specific fixes or patches related to this error message. You can search for the error message or related keywords in the SAP Support Portal.
  Community Forums: SAP Community and other forums can be helpful for finding similar issues faced by other users and the solutions they implemented.
  SAP Help Portal: The SAP Help Portal provides detailed documentation on configuring and troubleshooting SAP PI/PO.
  
  By following these steps, you should be able to identify the cause of the error and implement a solution to resolve it.