Question: I am using SuiteScript to fetch Subsidiary information. Using nlapiLookupField method I am able to see the basic fields. But I want some information on Subsidiary-Preferences tab.

It seems nlapiLookupField cannot access fields on a subtab (Preferences).

Answer: 
These fields are not even listed in [SuiteScript Records Browser](https://system.netsuite.com/help/helpcenter/en_US/RecordsBrowser/2013_1/index.html). 

One way to read them is by loading the record eg:

```
   var rec = nlapiLoadRecord('subsidiary', 11);
   rec.getFieldValue('CHECKTYPE');

```
Open the record inside the NetSuite UI. Append '&xml=T' to the end of the url for the record.

Take a look at the underlying XML data - that should be everything you see in the UI, and you will see the field names, sublists, etc.