How can we customize the Sales Order Invoice Posting so as to apply discount at invoice level on tax inclusive amount.
In UBL2.0 XML there is header level discount which applies to Total Invoice Amount (Including Tax) which reduces the Payable amount by retention amount. Later this retention amount can be separately invoiced.
Looking for some pointers to start the customization in Sales Order. Not using Project management module. Even in project management, retention is first applied before tax calculations.
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