Generally, for the Apparel industry as per the GST provision tax rate will differ as per the unit price. As we don't have such column in standard GST configuration client is unable to comply with GST provisions unless User selects manually Tax rate type option for different tax rate calculation every time.

User wants this setup to be made single time so that manual updating of tax rate type dependency can be avoided.

So If we add this column in GST configuration and complete tax setup configuration process, tax rate will get selected as per the unit price validation defined and tax amount also will get calculated as per the tax rate.

Please look into this option to be made available and will be appreciated if you take this as critical business requirement and release asap in coming GST configuration version release which will be helpful for whole Apparel industry in India.