PB Shipping API USPS label prints 2 day instead of 1 day in SendSuite Live or SendPro Enterprise

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Products affected: SendSuite® Live, SendPro® Enterprise

Issue

When processing an in-state shipment with the PB Shipping API USPS carrier using Priority Express Mail service, the expected commitment delivery date is 1 day, but the label prints as 2-day delivery.

Cause

Delivery transit time information is based on the Origin and Destination Postal Codes, as well as the time of day the label is printed. One-day delivery commitments assume that the package will be at the Post Office by a certain time. 

This does not mean that it will not be delivered within 1 day, but due to timing it may only guarantee 2-day delivery.

Resolution

This is expected behavior. No further action is necessary.

UPDATED: June 03, 2021