I have an lookup field in my opportunity object which is pointing to a custom object called
Code__c has an external Id field called
When creating an opportunity once way of linking the opportunity to
Code__c is by passing Id.
Opportunity op = new Opportunity(Name = 'Test Op', StageName = 'Open', ... , Oppoortunity_Code__c =code.Id );
Is it possible to use external ID (
Code_Source__c) instead of the