How To Fix SWF_HTTP311 - Error when generating the task container

SAP Error Message - Details

• Message type: E = Error

• Message class: SWF_HTTP - Web Services in the Workflow: Server Functions

• Message number: 311

• Message text: Error when generating the task container

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 SWF_HTTP311 - Error when generating the task container ?

  The SAP error message SWF_HTTP311 typically occurs in the context of SAP Workflow when there is an issue with generating the task container, particularly when dealing with HTTP requests or web services. This error can arise due to various reasons, including configuration issues, network problems, or incorrect data being passed to the workflow.
  Causes:
  
  Incorrect HTTP Configuration: The HTTP destination may not be configured correctly in the SAP system.
  Network Issues: There may be network connectivity problems between the SAP system and the external service.
  Authorization Issues: The user or service account may not have the necessary permissions to access the HTTP service.
  Invalid Data: The data being sent in the HTTP request may be malformed or not conforming to the expected format.
  Service Unavailability: The external service being called may be down or not reachable.
  
  Solutions:
  
  
  Check HTTP Destination Configuration:
  
  Go to transaction SM59 and verify the configuration of the HTTP destination. Ensure that the URL is correct and that the connection type is set appropriately.
  Test the connection to ensure it is working as expected.
  
  
  
  Review Workflow Configuration:
  
  Check the workflow definition and ensure that the task container is being populated correctly.
  Validate the input parameters and ensure they are being passed correctly to the workflow.
  
  
  
  Network Troubleshooting:
  
  Use tools like ping or traceroute to check connectivity to the external service.
  Ensure that there are no firewall rules blocking the connection.
  
  
  
  Check Authorizations:
  
  Verify that the user or service account has the necessary authorizations to execute the workflow and access the HTTP service.
  
  
  
  Examine Logs:
  
  Check the SAP application logs (transaction SLG1) for more detailed error messages that can provide additional context about the failure.
  Look for any relevant logs in the external service to see if it received the request and if there were any errors on that side.
  
  
  
  Test External Service:
  
  If possible, test the external service independently (e.g., using Postman or curl) to ensure it is functioning correctly and returning the expected responses.
  
  
  
  Debugging:
  
  If the issue persists, consider debugging the workflow to trace the execution and identify where the error occurs.
  
  
  
  Related Information:
  
  SAP Notes: Check SAP Notes related to SWF_HTTP311 for any specific patches or updates that may address known issues.
  Documentation: Review the SAP documentation for workflows and HTTP services to ensure best practices are being followed.
  Community Forums: Engage with SAP community forums or support channels for additional insights and shared experiences from other users facing similar issues.
  
  By following these steps, you should be able to identify and resolve the SWF_HTTP311 error in your SAP environment.