Don't validate presence of reference_code in SaldoLineItem.
Don't validate presence of reference_code in SaldoLineItem.

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