lot_or_serial__c false IF( AND(ISBLANK(Serial_number__c ),ISBLANK(Serial_number_text__c)), IF(ISBLANK(Lots_No__c),Lots_No_text__c,Lots_No__c), IF(ISBLANK(Serial_number__c),Serial_number_text__c,Serial_number__c)) BlankAsZero 机身号/批号 false false false Text false