New SuiteScript Enhancements in NetSuite 2026.1

TL;DR Opening

Starting in NetSuite 2026.1, significant enhancements have been introduced for SuiteScript, improving execution logs, introducing new API methods, and optimizing custom tool scripts for better monitoring and troubleshooting.

What's New

NetSuite 2026.1 introduces several exciting enhancements that cater specifically to SuiteScript users. Here’s what has changed:

New Preference to Execute SuiteScript 2.0 Scripts as SuiteScript 2.1

A new option allows administrators to execute existing SuiteScript 2.0 scripts with the SuiteScript 2.1 framework. This transition can facilitate better performance and access to the latest scripting features.

N/http and N/https Support for PATCH Method

The N/http and N/https modules now support the PATCH method, enabling more versatile and efficient network interactions, particularly when updating resources on the server.

Custom Tool Script Enhancements

Enhancements have been made to custom tool scripts, which now support:

• Execution Logs: You can view execution logs for custom tool scripts through the Script Execution Logs page (Customization > Scripting > Script Execution Logs).
• SDF Updates: Important updates on SDF object definitions include:
  • Change of the object name from tool to toolset.
  • Update of the script ID prefix from customtool_ to custtoolset_.
  • Renaming the attribute from exposeto3rdpartyagents to exposetoaiconnector.
• Entry Points: Entry functions for tool methods must now be declared as asynchronous.

These changes are designed to improve script monitoring and troubleshooting capabilities significantly. For guidance on the updates, refer to specific documentation on updating custom tools in NetSuite 2026.1.

Subscription Metrics Cohort Enhancement

A new acquisition date field will now appear on customer records within subscription metrics, allowing for better tracking of customer acquisition timelines.

Improved Exception Management

Exception management is now supported in sandbox accounts, facilitating a smoother development and testing process.

Class, Department, and Location Role Restrictions

Updated role restrictions now include unassigned values for Class, Department, and Location (CDL) on account records, ensuring more granular control over access rights.

AI Integration: Support for GPT-OSS Model

The N/llm module now includes support for the GPT-OSS model, enabling advanced AI features and capabilities within your SuiteScript implementations.

Advanced Intercompany Journal Entries

NetSuite 2026.1 introduces support for advanced intercompany journal entries in handling Philippine tax audit files, streamlining compliance and reporting processes.

Consolidated Reports and New SuiteQL Tool

New features enable enhanced reporting options and introduce a SuiteQL tool in MCP standard tools, providing a more robust analytics experience.

Who This Affects

The updates and enhancements impact:

• Developers: Enhancements to SuiteScript and custom scripts.
• Administrators: New preferences and customization options.
• Accountants: Features related to intercompany journal entries and subscription metrics.
• IT Professionals: Improved networking options and API support.

Key Takeaways

• NetSuite 2026.1 enhances SuiteScript functionality and supports new API methods.
• Custom tool scripts have improved logging and XML definition updates.
• New features facilitate better exception management and reporting capabilities.
• The introduction of AI support with GPT-OSS bolsters SuiteScript functionality.