Sage to NetSuite Migration Toolkit

The problem

The decision to leave Sage is easy. The history is what stalls the project.

Masters are the visible part — customers, vendors, items, employees, the chart of accounts. The part that kills timelines is everything underneath. Sage dimensions, departments, cost centres and locations do not map cleanly onto NetSuite's department, class, location and custom segment model, and the mapping has to be decided line by line before a single journal can load. Open AR and AP have to arrive as real open transactions so aging and collections work on day one, not as a lump-sum opening balance. Multi-year GL history has to tie to the trial balance you signed off in Sage, per period and per subsidiary, or the first month-end in NetSuite becomes an audit. Bank reconciliations, partially applied payments, credit notes, prepayments, foreign-currency revaluation and inventory cost layers all have to land somewhere defensible.

And it has to be repeatable. Nobody migrates once. You run it in sandbox, find twelve mapping errors, fix them, and run it again — and again — until the reconciliation is clean, then you run it one final time on cutover weekend under time pressure.

What ECOSIRE builds

ECOSIRE builds a migration toolkit inside your NetSuite account as a SuiteScript 2.1 project. This is not a downloadable product. It is engineered around your specific Sage configuration, your chart of accounts and your dimension structure, then built, run with you, and supported through cutover.

Extract and staging

Sage data arrives as structured exports — CSV, ODBC extract or API payload depending on which Sage product and deployment you run. Everything lands first in NetSuite staging custom records (customrecord_eco_mig_stage_*) with the source system, source record key, batch id, row hash, validation status and error text on every row. Nothing is written to a real NetSuite record until its staging row has passed validation. This is what makes the migration re-runnable: you reload a batch, revalidate, and only the rows that changed move.

Mapping layer

A set of mapping custom records holds every translation decision as data rather than code: Sage account code to NetSuite account internal id, Sage dimension value to department, class, location or a custom segment, Sage customer and vendor codes to NetSuite entity internal ids, Sage tax codes to NetSuite tax codes, Sage item codes to NetSuite item internal ids and item types. Your finance team edits these in the NetSuite UI. Changing a mapping never requires a code change or a redeployment, which matters when you are on the third rehearsal and the controller changes their mind about cost centres.

Master data load

Customers, vendors, contacts, employees, items and the chart of accounts load through Map/Reduce scripts with per-record validation — required fields, subsidiary assignment in OneWorld, currency, terms, tax registration, item type and costing method. Duplicate detection runs against existing NetSuite records so a partially completed run does not create a second copy of every customer.

Transactional history

Open AR loads as Invoices and Credit Memos with original dates, terms and applied payments so aging buckets are correct from go-live. Open AP loads as Vendor Bills, Vendor Credits and Bill Payments. Historical GL loads as Journal Entries batched by period and subsidiary, with intercompany handling where OneWorld requires it. Inventory arrives as Inventory Adjustments or Item Receipts carrying quantity and cost so valuation is right, and open sales and purchase orders load as live transactions where you need fulfilment continuity. Everything is written through Map/Reduce so multi-year volume completes within SuiteScript governance rather than timing out.

Reconciliation

Every load produces reconciliation saved searches comparing NetSuite to the Sage source: trial balance by account and period, AR aging total and by customer, AP aging total and by vendor, inventory quantity and value by item and location, and a row-count and control-total report per batch. A variance report lists every difference with its source key so it can be traced back to the exact Sage row. Cutover sign-off is a document, not an opinion.

Cutover support

We run at least one full rehearsal in your sandbox against a production-scale extract, and we run the production load with you on the agreed cutover window, with a documented rollback position — the toolkit's batch model means a batch can be reversed and reloaded rather than unpicked record by record.

Who this is for

Companies moving from a Sage product to NetSuite that carry real accounting history: multi-year GL, live AR and AP, inventory with cost, and dimension structures that were built up over years and never documented. It fits both single-entity migrations and OneWorld consolidations where several Sage instances collapse into one NetSuite account.

How delivery works

1. Scoping call. We review your Sage product, version and deployment, sample extracts, your chart of accounts, dimension structure, entity counts, transaction volumes and how many years of history you need in NetSuite versus archived elsewhere. 2. Fixed quote. You receive a fixed-price quote covering the object set, the number of rehearsals, and the cutover window. 3. Build. ECOSIRE develops the SuiteScript 2.1 toolkit — staging records, Map/Reduce loaders, validation, mapping records, reconciliation saved searches and RESTlets for automated extract handoff. 4. Install in test. We deploy to your sandbox as an SDF project or unmanaged bundle and run a full rehearsal against real extract volume, producing reconciliation reports you review with your controller. 5. Production. After sign-off on the rehearsal reconciliation, we deploy to production and run the cutover load with your team in the agreed window. 6. Support. A post-cutover support window covers reconciliation questions, remedial batches and adjustments found during the first close.

Lead time is typically two to four weeks from signed quote to the first sandbox rehearsal, with the cutover date set jointly around your close calendar.