Hello do you know if it is possible to have a unique number for my transactions for reference purporses?

I've got you covered, Persasym. I understand the significance of having unique transaction numbers in QuickBooks Online (QBO). Let me share the steps to achieving your objective.

Normally, QBO will automatically generate unique transaction numbers to prevent duplicate figures for your entries. If you're referring to these numbers, you can enable a built-in feature of QBO so you can set up your own unique numbers.

Here's how:

1. Go to Settings ⚙ and select Account and settings.
2. Choose the Sales tab, then tap anywhere within the Sales form content section.
3. Turn on Custom transaction numbers.
4. Hit Save, then pick Done.
   

After that, you can open an invoice or any sales form and enter the custom number or letter sequence in the Invoice no. field you want to use for your forms. Please note that after saving the transaction, the sequence you set here applies to all sales forms.

Moreover, you can add some custom fields instead to use as your unique number field. Check out this article for more details about this option that is exclusive to QBO Plus and Essentials subscriptions: Add custom fields to sales forms and purchase orders in QuickBooks Online.

Otherwise, you can use the Message on invoice or Message displayed on sales receipt field to input your desired transaction numbers.

Additionally, you can visit these articles for further instructions on how to include additional details or personalise sales transactions:

• How to customise invoices in QuickBooks Online
• Customise invoices, estimates, and sales receipts in QuickBooks Online

Please keep me updated on how it works for you after following these steps, as I want to ensure this is resolved for you. I'm just a post away if you have any other concerns besides transaction numbers. Wishing you a wonderful rest of the week.