A short, one-sentence description of fields would be incredibly helpful.
For example, the CreatePurchaseOrderLineItemInput has a required field expected_weight_in_lbs. Is this the per-unit expected weight or the total (quantity * per unit weight)?
Similarly, the same input has vendor_id and vendor_sku. Presumably the vendor_id field is the ShipHero ID assigned to the vendor, but this isn’t immediately clear.
Many of these questions can be figured out by trial and errors, but since there’s no automatic provisioning of a sandbox, we’re always a little leery of just sending data to production.