You received goods into your warehouse and now they’re just lying there all boxed up. In order not to mess things up, you should do some things in order and be careful. Your course of actions: 

1. Ensure the receiver is really you or your company;
2. Ensure the invoice is either with the goods, in your possession otherwise or confirm you will receive it as soon as possible;
3. Ensure the boxes are intact in the way that you can ensure the goods are not damaged (if they are damaged, contact your supplier and / or send the goods back with the courier that delivered them);
4. Match the quantities and items received with the invoice;
5. Match the quantities and items with the purchase order you made initially for the goods;
6. Contact your supplier as soon as possible for any reclamations or discrepancies (i.e. missing goods or wrong quantities) and agree further actions to be taken;
7. For all the correct goods received (items and quantities are in order), enter the items into your accounting (or inventory ledger);
8. Account for the invoice with proper credentials and due dates so it pops up on the right date to be paid;
9. In case of any arguments and settlements in process with your supplier, don’t account for the goods you plan to ship back. For the goods you have agreed to receive a credit invoice, account them with the proper cost price already so you can start selling them.

And that’s really about all. Most important thing is to ensure you actually received what you ordered because no doubt, your order was based on your needs or thoughts. And obviously, ensure also that the invoice is made out for the right items just as well. It’s not the items obviously, but also the quantities. Humans make errors and just as well, it doesn’t hurt to double check.