So you have to think about using a primary key in a database?  Quick books would therefore benefit greatly from hiring ONE database administrator for your global team. Primary Keys are as basic as wheels on a car in a database. 

Or.... is it that Primary keys are hidden from customers, and yet actually present for all customer data entries, for ease of searches and debugging from QuickBooks perspective. Benefitting you, and not us.

I don't mean to be cheeky, it's not my preference. But it is a significant blunder to use anything else as a primary key, other than a correct primary key sequencing convention. 

I don't want to print invoices and have a customers primary key visible on their invoice, advertising that we are using QuickBooks Online, as we have to stuff the primary key into another field and concatenate this data it into the business name data. And no... notes is not a field one can use to import.

Just do things properly? Hire a database admin? makes sense right?

Years later..... Any word on this yet?

Hello there, 

I can see how convenient it is for you to be able to input customer numbers. Currently, this is unavailable in QBO. As we value your suggestions, I recommend sending your feedback to our Product Development Team. Here's how to send feedback: 

1. Click the Gear icon in the upper-right corner.
2. Select Feedback under Profile.
3. Share your feedback.
4.  Click Next to submit.

Our product engineers will consider your suggestions, and you can always check the status of your request through this link: QuickBooks Online Customer Feedback. 

You can also search for a third-party app that will allow you to proceed with this. Here's how:

1. Go to the Apps tab.
2. Move to Find Apps.
3. Search for a third-party app that works for you. 

You can utilize this article for future reference: Customise Reports In QuickBooks Online.

If you have any other QuickBooks-related questions, please post them in the Community. We are always available and eager to assist you with your inquiries. Have a wonderful day.

Sadly no word yet. I did follow the included instructions to make this feature request through the correct submission channel. Have not heard back from anyone yet.

Still hard to believe...  a feature request to get a primary key in the database.....  sorry but why? why? Why? do I have to ask for this?