I own a restaurant. We purchase raw products from suppliers. I need to input purchase invoices. How to change the order no? I need help

Several scenarios are applicable so you can update your order number, Mysterydp2424. I'm here to guide you through them.
 

To begin with, if you intend to link your cheque to a purchase invoice, you will need to create a bill first. After that, you can manually enter a bill number. I'll outline the steps below for you to follow:
 

1. Log into your QBO account.
2. Click + New, then select Bill. 
3. Choose the supplier from the Payee ▼ dropdown. A window will appear in the right corner with their open purchase orders.
4. Enter your bill number in the Bill no. tab. 



5. Select Add for the correct purchase order to count the items from the purchase order and appear in the Item Details section.
6. Modify the form as needed. Once done, Save and Close.
 

For a comprehensive guide on the steps and other options for adding your purchase order to a transaction with your supplier, you can consult this article: Add purchase orders to expenses, bills, or cheques in QuickBooks Online.
 

Next, activate the Custom Transaction Numbers option to update your order number directly in the Purchase Order (PO) form. By doing so, it will let you create your PO numbers. It's important to note that POs are non-posting transactions and will not impact your financial records.
 

Here's how you can turn it on:
 

1. Click the Gear icon in the upper right corner of your PO form.
2. A pop-up window in the left corner will appear, marked check the box beside Custom transaction numbers.



3. Click the X button to close it, then refresh your webpage to ensure changes follow. Once done, a PO no. tab will become available to tailor your number.


 

Explore more insights in creating your PO in QBO by reviewing this material: Create and send purchase orders in QuickBooks Online.
 

Additionally, QBO has ready-made reports available, such as the Open Purchase Order Detail report and the Purchases by Supplier Detail report, which allow you to overview your open invoices or compile their details in one place. You can customize these reports according to your business necessities.
 

If you have a different meaning in mind for the order number, kindly elaborate more information in the comments below. I'll address those questions as soon I hear back from you. Be safe!