In addition to box sizes, we have 4 envelopes of differing sizes.

Following the same pattern as I did with our boxes, I set each Envelope size up as its own unique Package Type.

I set the Carrier to FedEx and assigned "YOUR_PACKAGING" as the Carrier Code.

I set up the Height, Width, and Length as appropriate to the envelope.

The issue comes from setting the Height to 0.25" on each of these. They are thin, bubble-type envelopes.

When processing a Delivery, the Validate step fails stating that the Height, Width, and Length must be greater than 0. (They all are greater than 0)

On a hunch, I changed the 0.25 setting to 1.0 instead. It seems that the API is not happy with any settings being less than 1.

Anyone else encounter this? Find a way to make it work without overstating the size?