I am working on a client POC to showcase a simple supplier invoice approval workflow using SAP Build process. Created a Action project using supplier invoice API specification. Also, defined a destination to connect to S4 On-Premise system through cloud connector. The defined destination 'CAL' connects successfully to the backend when tested from subaccount but any action say a 'GET' is tested from Action Editor, receive '503 Service Unavailable' error.
I am using a free tier account. Any lead to the root cause is appreciated.
