The order number listed at the vendor is 1 digit different from the customer's

Hi,

That's normal. If you edit the order of the user in the backend, you'll see that there is one sub order for each vendor of the order, and each sub order will have an order number. What the vendor sees is not the main order, but his sub order. That way, vendors won't see the information of the other vendors when products from different vendors are in the same order.

Hello,

See setting "Use same order number for sub-orders"
www.hikashop.com/support/documentation/1...onfig_market_general

Regards,

Hello,

The Order Number and the Invoice Number are two different things.
Order Number is generated at the order creation and the Invoice Number at the order confirmation.

The Invoice ID/Number have some legal rules.
Copying the Invoice id from the customer invoice is not correct for the vendor since he would have non consecutive numbers.
Nevertheless, if you does not to follow these rules, you can override the "invoice number format" in the vendor settings and use the keyword

{parent_code}

Hello,

Legally, the invoice number for the seller must be sequential.
The customer see the "invoice number" from your store.
The vendor see the "invoice number" for its own sales in the store.

Regards,