Fix vat rate in debit invoice building.
Fix vat rate in debit invoice building.

gaapt/bookyt,gaapt/bookyt,silvermind/bookyt,huerlisi/bookyt,silvermind/bookyt,huerlisi/bookyt,xuewenfei/bookyt,wtag/bookyt,xuewenfei/bookyt,huerlisi/bookyt,hauledev/bookyt,silvermind/bookyt,gaapt/bookyt,gaapt/bookyt,hauledev/bookyt,hauledev/bookyt,wtag/bookyt,wtag/bookyt,xuewenfei/bookyt,silvermind/bookyt,hauledev/bookyt