Error: "PB Shipping API: 1050001Invalid label paper size;1050002Invalid label receipt option for given paper size" appears when Shipping with carrier PB Shipping API, First Class Mail, with package type Large Envelope/Flat.

Learn how to resolve the issue "PB Shipping API: 1050001Invalid label paper size;1050002Invalid label receipt option for given paper size" when Shipping with carrier PB Shipping API, First Class Mail, with package type Large Envelope/Flat.
Products affected: SendPro® Enterprise

Issue

When shipping with the PB shipping API and selecting first class mail and Large Envelope/Flat package the error "PB Shipping API: 1050001Invalid label paper size;1050002Invalid label receipt option for given paper size;1050001Invalid label paper sizeRequest contains an invalid document size for the given document file format;1050008Invalid label paper size for given printer type." appears.

Cause

An incorrect package type was selected

Resolution

In the Shipping app change the Package Type dropdown from Large Envelope/Flat to First Class Large Envelope/Flat.

UPDATED: October 02, 2024