Thanks for the info, does this work for on-premises APEX instance or Only Instance hosted in the OCI Cloud/Autonomous database? Thanks

Hi Jon, Thank you very much for the detailed information. However, I was wondering if you can provide information on how to make API calls to external systems that requires registration, in which the client has to make CSR request and in return the clients is provided with an SSL certificate and a private key. In Postman, you will need to add the cert and key then pass client ID and Client screen to obtain a token. I am using on-premise DB 21c XE and APEX 23.1. I added the cert to the wallet but could not add the key "Header not present in private key". As recommended by oracle support tired using openssl to combine the cert and key into a single .p12 file the imported the file into the wallet and still not working, receiving this error: ORA-29273: HTTP request failed ORA-06512: at "APEX_230100.WWV_FLOW_WEB_SERVICES", line 1325 ORA-06512: at "APEX_230100.WWV_FLOW_WEB_SERVICES", line 897 ORA-29024: Certificate validation failure. Here is a link to the oracle support article for refrence: https://support.oracle.com/epmos/faces/DocumentDisplay?_afrLoop=383077339656462&parent=EXTERNAL_SEARCH&sourceId=PROBLEM&id=2958682.1&_afrWindowMode=0&_adf.ctrl-state=h9vss8v6i_4 Thank you