N/error Module
SuiteScriptError.stack
Property Description: List of method calls that the script is executing when the error is thrown. The most recently executed method is listed at the top of the list.
Type: Array of strings (read-only)
Supported Script Types: All server scripts that are not user event scripts. For more information, see SuiteScript 2.0 Script Types.
Module: N/error Module
Since: 2015.2
Search NetSuite - https://system.netsuite.com/app/help/helpcenter.nl?search=SuiteScriptError.stack

// Code Example 1

//Add additional code

//...

var SScustom_error = error.create({

    name: 'MY_ERROR_CODE',

    message: 'my custom SuiteScriptError details',

    notifyOff: false

});

log.debug("Error Stack: " + SScustom_error.stack); // stack is set by the system

                                                  // 'Error Stack: ' followed by the stack will be logged

//...

//Add additional code



//SOURCE: https://system.netsuite.com/app/help/helpcenter.nl?fid=section_4243803715.html