How To Fix UMK620 - Internal error when intializing the HTTP client

SAP Error Message - Details

• Message type: E = Error

• Message class: UMK - Measures

• Message number: 620

• Message text: Internal error when intializing the HTTP client

What causes this issue?

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

System Response

How to fix this error?

Contact your system administrator.

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 UMK620 - Internal error when intializing the HTTP client ?

  The SAP error message UMK620, which indicates an "Internal error when initializing the HTTP client," typically arises during the use of HTTP-based services in SAP systems. This error can be caused by various factors, including configuration issues, network problems, or issues with the underlying HTTP client libraries.
  Possible Causes:
  
  Configuration Issues: Incorrect settings in the HTTP client configuration can lead to initialization failures.
  Network Problems: Issues with network connectivity, such as firewalls or proxy settings, can prevent the HTTP client from establishing a connection.
  Authorization Issues: Lack of proper authorizations for the user or service trying to access the HTTP client.
  SAP Kernel Issues: Bugs or inconsistencies in the SAP kernel or HTTP client libraries can also lead to this error.
  Resource Limitations: Insufficient system resources (like memory or CPU) can cause the HTTP client to fail during initialization.
  
  Solutions:
  
  
  Check Configuration:
  
  Review the HTTP client configuration settings in transaction SOAMANAGER or relevant configuration transactions.
  Ensure that the endpoint URLs and authentication methods are correctly set up.
  
  
  
  Network Connectivity:
  
  Verify that the SAP system can reach the target HTTP service. You can use tools like ping or telnet to check connectivity.
  Check firewall and proxy settings to ensure they are not blocking the connection.
  
  
  
  Authorization:
  
  Ensure that the user or service account has the necessary authorizations to access the HTTP client and the target service.
  
  
  
  Update SAP Kernel:
  
  Check for any available updates or patches for the SAP kernel and apply them if necessary. This can resolve known bugs related to the HTTP client.
  
  
  
  Monitor System Resources:
  
  Use transaction SM50 or SM66 to monitor system resources and ensure that there are no bottlenecks affecting the HTTP client.
  
  
  
  Check Logs:
  
  Review the application logs (transaction SLG1) and system logs (transaction SM21) for any additional error messages or warnings that could provide more context about the issue.
  
  
  
  Restart Services:
  
  Sometimes, simply restarting the relevant services or the entire SAP system can resolve transient issues.
  
  
  
  Related Information:
  
  SAP Notes: Check the SAP Support Portal for any relevant SAP Notes that address the UMK620 error. These notes may provide specific fixes or workarounds.
  Documentation: Review the official SAP documentation for the HTTP client and related components to ensure that all configurations are correctly set.
  Community Forums: Consider searching or posting on SAP community forums for insights from other users who may have encountered similar issues.
  
  If the problem persists after trying the above solutions, it may be necessary to contact SAP support for further assistance.