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ERPNext Customization

Make ERPNext Fit Your Process Without Breaking Upgrades

Every business has a few steps no standard ERP covers. We build those into ERPNext the supported way, using custom fields, workflows, scripts and separate custom apps, so your next version upgrade does not undo the work.

50+ ERP and software projects. Zero failed projects since 2021.

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How We Handle a Requirement
Illustrative
We stop at the first level that solves it
1
Standard setting
A configuration already in ERPNext
Lowest cost
2
Custom field or workflow
Added through the customize view
Low cost
3
Script or custom report
Client or server script, kept in your app
Scoped
4
Custom app
New doctypes and logic, upgrade-safe
Project
We never edit ERPNext core files. That is what breaks upgrades.
4
Levels, cheapest option first
0
Core files edited
Fixed
Price and date per request
Yours
Code, repository and instance
Why It Matters

Customization is where most ERPNext projects go wrong

Not because the change was hard, but because it was built in a way that could never be upgraded or maintained.

Upgrade-Safe by Design

Changes that survive the next ERPNext version

Work done by editing core files disappears the moment you upgrade, which is why so many instances end up frozen on an old version. We keep every change in a separate custom app and attach it through the framework hooks, so upgrades stay a routine job.

  • A dedicated custom app, versioned in your repository.
  • Framework hooks instead of core edits.
  • Upgrades tested on a staging instance first.
Custom application code kept separate from ERPNext core
Only What You Need

The cheapest route that actually solves the problem

A lot of requests turn out to be a setting, a permission rule or a report rather than development work. We check those first and tell you when a change does not need code at all, which keeps the bill down and the instance simple.

  • Configuration checked before anything is built.
  • Each request scoped with a fixed price and date.
  • A clear reason recorded for every custom piece.
Scoping an ERP change request with a business team
What We Build

The kinds of ERPNext customization we deliver

From a single field on a form through to a full custom app running alongside standard ERPNext.

✎
Custom fields and doctypes
Extra fields on standard forms, and entirely new document types for records ERPNext does not have.
🔄
Workflows and approvals
Multi-step approval chains, state transitions, value-based limits and role-based routing.
💻
Client and server scripts
Validation rules, auto-calculated fields, scheduled jobs and logic that fires on save or submit.
🖲
Print formats
Invoices, delivery notes and certificates matching your branding and statutory requirements.
📊
Reports and dashboards
Query and script reports, role-based dashboards and the management views your team asks for.
🧩
Custom apps
A dedicated app on the Frappe framework when the requirement is a module of its own.
How It Works

From a request to a tested change on your instance

1
Understand
We look at the process behind the request, not just the screen you want changed.
2
Scope
We pick the lowest level that solves it and give you a fixed price and date.
3
Build
Work is done in your custom app, versioned, reviewed and commented.
4
Test
You run it on a staging instance with your own data before it goes anywhere near production.
5
Deploy
We release to production, document the change and watch it through the first cycle.
How We Work

The practices behind every change

📁

One custom app

All your changes live in a single versioned app, so it is always clear what is standard and what is yours.

🛡

No core edits

We attach through framework hooks only, which is what keeps your instance upgradeable.

🧪

Staging first

Nothing reaches production until it has been tested on a copy of your live data.

📝

Documented decisions

Each customization records what it does and why, so the next developer is not guessing.

↩

Rollback ready

Every release can be reverted, and we take a backup before we deploy.

🔑

Your repository

The code sits in a repository you own, so you are never dependent on one vendor.

What Changes

What good customization gives you

No
Spreadsheets beside the ERP
Fewer
Manual checks and workarounds
Routine
Version upgrades
Clear
Approval rules in the system
Faster
Reporting without exports
Owned
Code you can maintain yourself
Why Us

Why teams choose TCB Infotech for ERPNext customization

1
We talk you out of code
If a setting solves it, we say so. Less custom work means a simpler system for you.
2
Framework developers
We build on the Frappe framework itself, not just the ERPNext screens on top of it.
3
Fixed scope and price
Each request is quoted before work starts, so there are no surprises on the invoice.
4
Upgrade record
Our customers move between ERPNext versions without rebuilding their customizations.
5
We inherit other people's work
We take over existing instances, review what is there and make them supportable again.
6
Proven delivery
50+ ERP and software projects across industries, with zero failed projects since 2021.
FAQ

ERPNext customization questions

What can be customized in ERPNext?
Custom fields and doctypes, workflows and approval chains, client and server scripts, print formats, dashboards, custom reports, role permissions, and full custom apps built on the Frappe framework underneath ERPNext.
Will customization break our next ERPNext upgrade?
Not when it is built the supported way. We keep changes in a separate custom app and use the framework hooks rather than editing core files, so an upgrade does not overwrite your work. Direct core edits are what break upgrades, and we do not do them.
How do you decide between configuration and custom code?
We look for a configuration route first, because settings cost less and survive upgrades on their own. Custom code is proposed only when there is no standard option, and we tell you which route we are taking and why before we start.
How much does ERPNext customization cost?
It depends on the requirement. A custom field or print format is a small piece of work. A custom app with its own doctypes and integrations is a project. We scope each request and give a fixed price and date before any coding begins.
Can you customize an ERPNext instance someone else built?
Yes. We start with a short review of the existing setup to see what was configured, what was customized and how, then work from there. If we find core edits, we tell you what it would take to move them into a supported custom app.
Do we own the custom code?
Yes. The custom app sits in your repository and on your instance, with documentation. You can maintain it in-house or with any other partner.

Tell Us What ERPNext Is Not Doing Yet

Book a free consultation. Bring the process that does not fit, and we will tell you whether it is a setting, a script or a custom app, with an honest estimate either way.

Book a Free Consultation →

No commitment. A straight answer on what your change really needs.

ERPNext Customization Features

What We Can Change Inside ERPNext

Four levels of change, from a setting on a form to a custom app of your own. Here is what each one covers, how we keep it upgrade-safe, and what you receive at the end.

Core Features

From a form field to an app of your own

Forms, Fields and Workflows

The layer most requests are actually solved at

Extra fields on standard documents, new document types, conditional visibility, mandatory rules, and multi-step approval chains with value limits and role-based routing. None of this needs code, and it carries forward through upgrades on its own.

  • Custom fields, sections and form layouts per role.
  • Approval chains with limits and delegated routing.
  • Permission rules by role, company and warehouse.
Configuring approval workflows in an ERP system
Scripts, Reports and Print

Logic and output shaped to your business rules

Client scripts that react as a user types, server scripts that validate or calculate on save and submit, scheduled jobs that run overnight, query and script reports for the numbers your team asks for, and print formats that carry your branding and statutory fields.

  • Validation, auto-calculation and scheduled jobs.
  • Query and script reports with role-based access.
  • Invoices and delivery notes in your own layout.
Custom ERP reports and dashboards on screen
Custom Apps on Frappe

A module of your own, kept separate from core

When a requirement is really a module, we build it as a Frappe app with its own doctypes, permissions, reports and hooks. It installs alongside standard ERPNext, sits in your repository, and is removed or upgraded independently of the core product.

  • New doctypes, list views and dashboards.
  • Attached through framework hooks, never core edits.
  • Versioned in your repository with documentation.
Custom application code built on an open source framework
What You Get

Everything that comes with a customization

📋

Written scope

What will be built, at which level, for a fixed price and date, agreed before work starts.

📁

A versioned custom app

All changes in one app in your repository, so standard and custom are never mixed up.

🧪

Staging instance

A copy of your live data to test on, so nothing untested reaches production.

📝

Change documentation

What each customization does, why it exists, and which documents it touches.

↩

Backup and rollback

A backup before every release and a tested way to revert it if something is wrong.

🛡

Upgrade check

Your customizations reviewed against each new ERPNext version before you move.