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Mukund ShrivastavaMukund Shrivastava 

Challenge Not yet complete... here's what's wrong: The Remote Site for BillingService does not appear to have been configured correctly. Please check the requirements again

Not able to complete data integration challenge 2. Can anyone help?
Pradeep SinghPradeep Singh
Please check if you have added the URL for BillingService in Remote Site settings and is active also. 
麗 楊 8麗 楊 8
it was worked for me that setting the URL to [http://sb-integration-bs.herokuapp.com], not [https://.....]
I know it is very confusing that the connected app was set by the [https://....]