Issue calling target from Service call out policy

[karthikprabhu77]

Hello All,

There are many times i had tried calling target using service callout but this time i'm getting an error which states

{"status":{"code":401,"errorType":"unauthorized","errorDetails":"Authentication parameters missing"}}

But the same target is reachable by configuring target URL at proxy target endpoint or from any web debugger like postman.

Could you please let me know what is the issue here.

Thanks,KP