Split per Line Items:
- Orders are split by the vendor field of each line item.
- The vendor cannot be changed after order placement.
- Single-vendor orders remain unchanged.
Sub-total, Taxes, and Total:
- Vendors see only their orders and totals, not the overall order value.
- Taxes are split based on line item details.
- Total prices for individual vendors add up to the overall order total, ensuring consistency with Shopify orders.