Invoice Template Cannot Be Deleted

Why can't the invoice template be deleted from the booking?

How can I remove the invoice template from a booking?

In ZimmerSoftware, you have the option to automatically create an invoice template for a booking. When this setting is enabled, an invoice template is automatically created for each applicable booking using the booking details stored in the system. This template cannot be deleted directly from the booking. If you do not want the invoice template to be displayed in the booking, you can click the “No Invoice” button to hide the existing invoice templates.