We need to ensure that your sales tax settings is properly configured and that the appropriate tax rate is included in the invoice you want to save, shayarviruppakka05.

QuickBooks Online relies on accurate sales tax configurations to calculate tax amounts and ensure compliance with local tax laws. If it's incorrectly configured or missing, the software will display a validation error when saving transactions.

To resolve the error, check if the sales tax tate is applied. On the invoice, review the Sales Tax Rate field, located near the Subtotal section at the bottom of the invoice. Make sure the correct rate is selected and is calculated properly.

Ensure also that all taxable items or services on the invoice have a sales tax rate assigned.

Verifying these details should fix the validation error and allow you to create and save the invoice successfully.

If you have any additional questions or concerns about QuickBooks, please reply below. The community is always here to help.