How to inactivate Terms: error: "This term cannot be deleted because it is used as the default for <company>, even after deleting all references?

Thank you for bringing this to our attention, equipmentguy.

By default, payment terms can't be deleted but can be made inactive. If a term has been set as default, it cannot be updated unless it is first removed as the default term.

Here's how you can remove it as default:

1. Go to Gear Icon. 
2. Under Company, select Account and Settings.
3. Go to Sales.
4. Under Sales form Content, select the Pencil icon.
5. Go to the Preferred Invoice term. You can leave it blank or change it. 
6. Select Save.

Step 2: Make terms inactive.

1. Go to Gear Icon.
2. Select All Lists under lists.
3. Choose Terms.
4. Click the arrow under Action, then choose Edit to change.
5. Select Make Inactive to hide the term you don't need.

I included this article on how to adjust invoice payment terms in QuickBooks Online for your reference.

Moreover, here are some articles that can help you manage your invoices:

• How to Review Open Invoices and Send Payment Reminders and Balance Forward Statements in QuickBooks Online.
• Customizing Invoices Within QuickBooks Online.

If you have any questions about payment terms, please don't hesitate to ask. You can reply to this thread or start a new one. Have a great day and take care!