An issue was reported regarding the 3PL 2.0 error "The requested resource does not support http method 'PUT'." This has been fixed.
In some cases, there was a calculation discrepancy causing PayPal declines resulting in the PayPal- transactions - Item amount must add up to specified amount subtotal (or total if amount details not specified) decline. This has been fixed.
The order_calculate method was not properly sending the discount for Shipping Coupon. This has been corrected.