SAP CAPM service failing with http 407 Proxy Authentication failed Error

[athulramakrishnan]

I am consuming a SOAP based web service from a S/4HANA On-prem system inside a SAP CAP service using sap-cloud-sdk api's coupled with BTP destinations and cloud connector. 

Reference :https://community.sap.com/t5/technology-blogs-by-sap/consuming-soap-web-services-in-sap-cloud-applic...

I have recently upgraded the @SAP-cloud-sdk/connectivity version to 3.23.0(latest) recently and now the service is failing sometimes with http status code 407- Proxy Authentication failed. The service works most of the time but randomly fails with this error. And once i redeploy the CAP app to CF again the service starts working like usual.

[Ulrich_Schmidt1]

Usually, when "it" sometimes works and sometimes fails, this is due to "load-balancing". I.e., there are two systems involved, one where the configuration is correct, and another one, where it isn't (e.g. in this case: wrong proxy password maintained). And the client (or some other component inbetween) then makes some kind of load-balancing and sometimes hits the working one, and other times the non-working one.

I know, this is only "very general", but there are not many details of the entire scenario/landscape available here. So try investigating into that direction and check, whether there may be any component involved here, of which there are two or more instances.

[akuller]

Hi, we have/had the same problem. Have a look at the logs in the Cloud Connector, they may tell you that system parameters are missing. Nevertheless, we are still experiencing the problem, so we are now evaluating the Private Link Service.