Added common error_messages #6542
Added common error_messages #6542

fulfilio/trytond-shipping,prakashpp/trytond-shipping,riteshshrv/trytond-shipping,joeirimpan/trytond-shipping,trytonus/trytond-shipping,priyankajain18/trytond-shipping,priyankarani/trytond-shipping,tarunbhardwaj/trytond-shipping