BAP-80 : add unique entity constraint on attribute code
BAP-80 : add unique entity constraint on attribute code

umpirsky/platform,akeneo/platform,ramunasd/platform,Djamy/platform,ramunasd/platform,mszajner/platform,orocrm/platform,morontt/platform,geoffroycochard/platform,trustify/oroplatform,morontt/platform,hugeval/platform,2ndkauboy/platform,northdakota/platform,orocrm/platform,trustify/oroplatform,geoffroycochard/platform,akeneo/platform,geoffroycochard/platform,hugeval/platform,trustify/oroplatform,orocrm/platform,hugeval/platform,northdakota/platform,mszajner/platform,akeneo/platform,morontt/platform,northdakota/platform,2ndkauboy/platform,ramunasd/platform,2ndkauboy/platform,Djamy/platform,umpirsky/platform,mszajner/platform,Djamy/platform