How do i add a data field to customer record?

Hello there, userbrucetownsend51.

You can use the Other field or Notes section on the Customer information page to add more details. 

If you want to add these details to your sales transactions, you can add this field and manually enter the information or copy and paste it from your notes. Let me show you how to add custom fields on invoices: 

1. Go to the Gear icon and select Custom form styles.
2. If you have an existing invoice template, you can click Edit. 
3. Select the Content tab. Scroll down to click the + Custom field option.
4. Check a box and enter a name for that field. 
5. Click Done. 

For more details on how to handle customer transactions and details, you click these links:

• Customize invoices, estimates, and sales receipts in QuickBooks Online
• Edit customer information

Keep me posted if you have other questions. Take care and have a great day!