I had the same problem, 400 Bad Request. I opened a new Question here: https://www.paypal-community.com/t5/REST-APIs/400-Bad-Request/m-p/1649271#M1737 I have to ask to check the DebugIds every time in this forum? or there is another way to check what happened for the specific case? Why the API Calls list page does not offer any info apart from OK/Fail ?
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