Database Reference
Order Split keeps Magento sales orders unchanged and adds a small registry that records which orders were created from the same checkout.
| Relationship | Why it matters |
|---|---|
sales_order_split_order belongs to one sales_order_split_group |
Groups all child orders created by the same split operation. |
sales_order_split_order points to one sales_order |
Connects the split registry to the standard Magento order. |
sales_order_split_registry_failure stores recovery payloads |
Keeps the data needed to retry a split whose registry write failed — see Split registry. |
Order items, invoices, shipments and payments continue to use Magento's normal sales records. Integrations can use the registry to find related orders without replacing Magento's order model.