A step-by-step guide to NetSuite TBA: enable the features, build the role, create the integration record and tokens, then sign OAuth 1.0a requests by hand. Includes an interactive signature playground and the 2027.1 deprecation timeline.

Setting up NetSuite token-based authentication (TBA) in 2026, and planning your exit

The simplest way to set up an HTTPS server in Nodejs application when developing locally

How to create an HTTPS server in localhost?

Key notes to save plenty of time while working with git for command-line-developer

Key notes while working with git

Some keynotes to keep in mind when working with Drag and Drop APIs in Javascript

Drag and Drop API keynotes

If you are familiar with functional programming, Array.prototype.map must be a function that you work with every day. We encountered a tricky use case of it at Cốc Cốc recently, it took me a while to figure out, and here's the answer...

Tricky use case of Array.prototype.map in JS

A case study on two monthly journal feeds, a four-file ETL batch and a payroll summary report, and the CSV task pipeline that picks the right files from SFTP, reshapes them for a saved CSV import, and counts what actually got imported when task.checkStatus() only says "COMPLETE".

Importing ETL and payroll journals into NetSuite with CSV import tasks

A case study on reusing a bulk approval design for Journal Entries on a custom multi-level approval-route engine, plus five bugs that only appeared after go-live: role checks, OR-logic routes, sublist limits, summary searches, and deploy manifests.

Porting NetSuite bulk approval to a custom approval engine, and the bugs production found

A case study on a self-chaining Map/Reduce that reconciled CSV imports by searching for the imported journals, and used up its retry budget in about a minute. The fix: retry for a fixed amount of wall-clock time, not a fixed number of attempts.

NetSuite CSV import reconciliation: why your retry window should be time-based

A case study on NO_DEPLOYMENTS_AVAILABLE and RCRD_HAS_BEEN_CHANGED: how a workflow action that queued a Map/Reduce could undo an approval during bulk runs, and how an eventually consistent sweep fixed it.

Why a NetSuite approval rolled itself back under load, and how a sweep fixed it

A real-world case study: how to let approvers clear hundreds of NetSuite transactions at once without bypassing the existing approval workflow, hitting governance limits, or losing track of what failed.

Building a bulk approval tool in NetSuite with a Suitelet and Map/Reduce

A case study on a custom Suitelet page that created two or three identical payment requests when users clicked Generate more than once on a slow connection, and the two-layer fix.

Preventing duplicate NetSuite records from double clicks: a client lock plus a server idempotency check

A case study on stopping edits to approved purchase order variations: a View-mode redirect that triggered permission errors, a server-side block that sent error emails, and the layered lock that finally worked.

Locking approved records in NetSuite: three attempts and what each one taught me

Why NetSuite integrations hit 429 Too Many Requests, how to size a client-side pool, retry with backoff and jitter, and use external ID upserts so a retry never creates a second sales order. With a live concurrency simulator.

NetSuite concurrency limits: retries, backoff, and idempotent upserts that do not create duplicates

How the NetSuite MCP server works, how to set up a safe role, connect Claude and Claude Code, and ship a custom SuiteScript tool with the toolset SDF object. Interactive request flow and tool explorer included.

Connecting Claude to NetSuite with the AI Connector Service (MCP), plus your own custom tools

Set up NetSuite OAuth 2.0 machine-to-machine auth from scratch: certificate, integration record, M2M mapping, and a PS256-signed JWT in plain Node.js. With an interactive flow diagram and an auth method picker.

All Posts

Setting up NetSuite token-based authentication (TBA) in 2026, and planning your exit

How to create an HTTPS server in localhost?

Key notes while working with git

Drag and Drop API keynotes

Tricky use case of Array.prototype.map in JS