"A system error occurred, try again later. If the error persists, please contact the service provider" message with USPS in SendSuite Live Shipping API or SendSuite Xpress

Products affected: SendSuite® Live, SendSuite® Xpress

Issue

When shipping via USPS using the Pitney Bowes Shipping API in SendSuite® Live or SendSuite® Xpress, the following error is being returned for all shipments:
 
"A system error occurred, try again later. If the error persist, please contact the service provider."

Cause

The cause of this issue is unknown.

Resolution

UPDATED: November 16, 2018
This issue must be resolved by a Pitney Bowes representative. Contact software support for assistance.