When using subscription billing we can generate free text invoices based on a pre defined billing schedule using default subscription billing module.

We cannot however define the item sales tax group on the billing schedule lines, during creation of the free text invoice, the item sales tax group is initiated from the general ledger parameters default item sales tax group.

This default however is a bit too restrictive when multiple item sales tax groups are necessary per billing schedule or across billing schedules.

Could we have the option to define the item sales tax group on the billing schedule lines instead of using the default item sales tax group?