SuiteScript llm.getRemainingUsage.promise() Syntax

llm.getRemainingUsage.promise() is called with .then() to work with an asynchronous result. In SuiteScript 2.1, promises allow remaining script segments to execute while an operation is pending. All client scripts support promises; starting with NetSuite 2021.1, a subset of server scripts also supports them.

How Do You Call llm.getRemainingUsage.promise()?

The documented syntax attaches a callback with .then(). The callback receives a parameter named result, which is where the sample indicates that script logic can work with the completed operation's result.

1// Add additional code
2...
3 
4llm.getRemainingUsage.promise().then(function(result) {
5    // Work with the result
6});
7 
8...
9// Add additional code

This is a syntax sample, not a functional example. It deliberately leaves the surrounding script code and the handling of result unspecified. Do not assume the structure or contents of result from this syntax alone.

For related reference material, see llm.getRemainingUsage() Syntax in SuiteScript 2026.2 and N/http Module Syntax for SuiteScript Redirects.

What Does the Promise Represent?

A promise is a JavaScript object that represents the eventual result of an asynchronous process. When created, it is a placeholder for that future success or failure, and other segments of the script can execute while the promise is waiting.

A promise has one of these states:

After the associated process completes, the promise changes from pending to either fulfilled or rejected. A promise can succeed or fail only once; after it reaches either final state, it cannot change. A success or failure callback attached to the promise is called when the process is complete.

For broader SuiteScript references, see NetSuite Record Syntax for SuiteScript 2.x Operations and Field Object Syntax in SuiteScript 2.x Programming.

Where Can SuiteScript Promises Be Used?

SuiteScript 2.1 provides promise APIs for selected modules. All client scripts support the use of promises in SuiteScript 2.1. Starting with NetSuite 2021.1, a subset of server scripts also supports promises.

Before applying this syntax, confirm that the relevant promise API is available for the script context being used. The syntax sample itself does not identify supported server script types or define the result returned to the callback.

Who This Affects

• SuiteScript developers using llm.getRemainingUsage.promise() syntax
• Client-script developers working with SuiteScript 2.1 promises
• Server-script developers using promise APIs where supported

Key Takeaways

• Call llm.getRemainingUsage.promise() and attach .then() to work with the result.
• The published snippet is syntax only, not a complete functional script.
• Promises begin as pending and settle once as fulfilled or rejected.
• Promise support applies to all SuiteScript 2.1 client scripts and a subset of server scripts beginning in NetSuite 2021.1.