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Unable to tunnel through proxy. Proxy returns "HTTP/1.1 503 Service Unavailable"

in Ask A Guru 3 comments

We are trying to integrate Workday to NetSuite using Web Services and OAuth 2.0 and when we try to connect from Workday we are getting this error: Unable to tunnel through proxy. Proxy returns "HTTP/1.1 503 Service Unavailable"

We have gone through our IT Team, NetSuite Support and ACS Team and have not been able to figure this out. Has anyone else seen this error connecting to NetSuite?

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