Error 407 When Connecting SAP CAP to ECC via On-Premise Destination Only in Production Subaccount

[fabi2295]

I am facing a 407 Proxy Authentication Required error when connecting my SAP CAP application to ECC via an On-Premise Destination in SAP BTP. Strangely, this issue occurs only in the production subaccount, while the connection works fine in dev, QAS, and pre-production subaccounts.

Has anyone encountered this issue before? Any suggestions on how to troubleshoot or resolve it?

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[fabi2295 · Accepted solution]

We found the root cause of the 407 error when connecting to SAP ECC. The issue was caused by a load balancing misconfiguration in the Cloud Connector.

[abranjan · Accepted solution]

Hi @fabi2295,

We are also facing similar kind of issue. We face this issue intermittently and 95% of the times the API runs fine. But sometimes it ends up giving this kind of error.

Could you please help us by sharing - what exactly was the fix which you did for this? Or where can we find this issue cloud connector? 
Because I am not sure of the root cause.

Kind Regards,
Abhijeet

[fabi2295 · Accepted solution]

Hi @abranjan,

We faced a similar issue, and after investigating, SAP provided us with the following note as a solution, which worked for us:

SAP Note 3317801 - Connecting to Message Server of ASCS instance for HTTP load balancing https://me.sap.com/notes/3317801/E

You might want to check if this applies to your scenario as well.