Start_day_not_null true DataMigration_Flag__c == false && IsChanged(Select_Time__c) && Not(Isblank(Select_Time__c)) && ISBLANK(Consum_Apply_Equipment_Set__r.Consum_Start_Date__c) && NOT(Consum_Apply_Equipment_Set__r.Cancel_Select__c) Asset__c [预计使用日]不能为空