When creating an original quote, if we select “Tax Apply On” as Overall and later if we revise the quote to change “Tax Apply On” as Line Items, in that case the taxes in the line items do not appear in the checklist.
I have tested this on other instances as well, and the same issue occurs there
While Creating Product Master have you applied the taxable on products, I think you should check your Product Master to see if the taxable applied or not
Yes, I have checked the products the taxes are properly applied. Also when i am creating a quotation with same products then the tax drop-down show the tax. The issue is with revising and changing the tax applied on from overall to line items.