What the internal order number is
SKULabs gives every new order its own internal order number (shown as Internal ID #), separate from the order number of the sales channel. Imported orders and manual orders both get one. Use it to track orders internally, search for them, and print it on labels and documents.
Internal order numbers are counted across your whole account, starting at 10001. Each store can add its own prefix of letters, for example WEB10001 for one store and AMZ10002 for another.
How to set an internal order number prefix for a store
Go to Settings > Stores and edit the store.
In Internal order number prefix, enter the prefix. Use letters only.
Save.
The field is on every store type, including manual stores. The prefix applies to orders created after you save. Orders that already have an internal order number keep it.
Where you can see and use the internal order number
Orders tables: turn on the Internal ID # column in the column options. It is hidden by default.
Order page: to show the number in the order header, edit your user profile and check Show Internal ID. It is off by default and applies to your user only.
Finding an order: scan or type the internal order number on the Orders page or the Scan Order page to open the order.
Exports: the Orders and Shipments exports include an Internal Order Number column. See Orders and Shipping Exported fields and their meanings (8758354).
Shipping labels: add INTERNAL_ORDER_ID to a label reference field. See How to customize shipping labels (5866657).
Templates: print templates can use the internalOrderNumber variable.
Accounting: Xero and QuickBooks Online can use each store's prefix for invoice or order numbers with Use store internal order number prefix. See Xero integration guide for SKULabs (16804503).