Hi, Soundar. I think you need to send some additional metadata into the list.addRequiredField function. You can use skuid.model.Model.getField to get the full Salesforce field metadata as a JavaScript object. Assuming that the Number_Draft_Value__c field is in the model being passed to that snippet, try something like this:
var fieldMetadata = model.getField('Number_Draft_Value__c'); list.addRequiredField(fieldMetadata);