N/record Module
Column.id
Property Description: Returns the internal ID of the column. Note that the Column.id value is the same as the value that is passed into fieldID.
Type: string (read-only)
Supported Script Types: Client and server-side scripts For more information, see SuiteScript 2.0 Script Types.
Module: N/record Module
Sibling Object Members: Column Object Members
Since: 2015.2
Search NetSuite - https://system.netsuite.com/app/help/helpcenter.nl?search=Column.id

// Code Example 1

// Add additional code.

//...

var objRecord = record.load({

   type: record.Type.SALES_ORDER,

   id: 275

});



var objSublist = objRecord.getSublist({

   sublistId: 'item'

});



var objColumn = objSublist.getColumn({

   fieldId: 'item'

});

log.debug ({

   title: 'ID comparison',

   details: 'Note that objColumn.id = '+ objColumn.id + ' is the same as the value you passed in as fieldID.'

})...

// Add additional code.



//SOURCE: https://system.netsuite.com/app/help/helpcenter.nl?fid=section_4600364069.html