Message type: E = Error
Message class: UMK - Measures
Message number: 621
Message text: HTTP/HTTPS Communication not available
HTTP/HTTPS communication is not available. No HTTP/HTTPS plugin service
has been installed on the application server.
The system issues an error message and will not allow you to continue with this transaction until the error is resolved.
Contact your system administrator to configure the HTTP/HTTPS plugin
service.
Error message extract from SAP system. Copyright SAP SE.
UMK621
- HTTP/HTTPS Communication not available ?The SAP error message UMK621, which indicates "HTTP/HTTPS Communication not available," typically arises when there are issues with the HTTP or HTTPS communication settings in the SAP system. This can occur in various scenarios, such as when trying to access web services, using the SAP GUI for HTML, or when integrating with external systems. Causes: Network Issues: There may be network connectivity problems between the SAP system and the client or external systems. Service Not Running: The HTTP or HTTPS service may not be running on the SAP application server. Incorrect Configuration: The HTTP/HTTPS settings in the SAP system may be misconfigured. Firewall Restrictions: Firewalls or security settings may be blocking the HTTP/HTTPS traffic. SSL
Configuration Issues: If using HTTPS, there may be issues with the SSL certificates or configuration. SAP Kernel Issues: The SAP kernel may be outdated or not properly configured to handle HTTP/HTTPS requests. Solutions: Check Network Connectivity: Ensure that the network connection is stable and
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