
In SM59, the connection test to SAP-SUPPORT_PORTAL is failing with HTTPIO_PLG_CANCELED error message.

Solution
The SAP-SUPPORT_PORTAL RFC connection requires HTTPS service. You have to ensure the HTTPS service is active in the transaction code SMICM.

You can refer to this article, Activate HTTPS Functionality in SAP System to get the steps on activating the HTTPS service.
Reference
- 2454045 – SAP Support Backbone Connectivity Troubleshooting in Solution Manager 7.2 – Guided Answer
- 1888596 – HTTPIO_PLG_CANCELED error in RFC connection test
- 2914072 – Connection test of SAP-SUPPORT_PORTAL or SAP-SUPPORT_NOTE_DOWNLOAD fail with error HTTPIO_PLG_CANCELED


