Occurs in a client's Live mode, but not Sandbox mode and not in our Live/Sandbox mode.
Currently waiting on access to the client's PayPal account to confirm settings.
Details of Error (Occurs when trying to create a billing agreement, creating/updating billing plans works fine):
AggregateException: One or more errors occurred. (The remote server returned an error: (400) Bad Request.)
System.Threading.Tasks.Task<TResult>.GetResultCore(bool waitCompletionNotification)
PayPal.Api.PayPalResource.ConfigureAndExecute<T>(APIContext apiContext, HttpMethod httpMethod, string resource, string payload, string endpoint, bool setAuthorizationHeader)
System.AggregateException: One or more errors occurred. (The remote server returned an error: (400) Bad Request.) ---> PayPal.HttpException: The remote server returned an error: (400) Bad Request.
at PayPal.Api.HttpConnection.Execute(String payLoad, HttpWebRequest httpRequest)
--- End of inner exception stack trace ---
at System.Threading.Tasks.Task`1.GetResultCore(Boolean waitCompletionNotification)
at PayPal.Api.PayPalResource.ConfigureAndExecute[T](APIContext apiContext, HttpMethod httpMethod, String resource, String payload, String endpoint, Boolean setAuthorizationHeader)
---> (Inner Exception #0) PayPal.HttpException: The remote server returned an error: (400) Bad Request.
at PayPal.Api.HttpConnection.Execute(String payLoad, HttpWebRequest httpRequest)<---
