Product2CanNotEqualProduct1
    true
    (TEXT(OPD_ProductCategory2__c) = TEXT(OPD_ProductCategory1__c)) &&
NOT(ISBLANK(TEXT(OPD_ProductCategory1__c))) && 
(RecordTypeId = '01210000000Qekj' || RecordTypeId = '01210000000RLTi')
    OPD_ProductCategory2__c
    OPD产品分类2不能等于OPD产品分类1