— Odoo / Migration
Tally, SAP, QuickBooks, on-prem — migrated to Odoo, reconciled to the rupee.
A defined migration playbook for the four legacy systems we see most in the GCC, plus the discipline to run a parallel-reconciliation week before cutover so finance trusts the new books on day one.
In one paragraph
Defined playbooks for Tally, QuickBooks, SAP B1 and on-prem systems. Not improvised.
Parallel reconciliation week before cutover. Trial balance, ageings and stock tied out before go-live.
Repeatable ORM-clean import scripts — not raw SQL — so cutover day is the third dry run, not the first.
Optional 2-to-4-week parallel run with automated daily reconciliation reporting.
What it includes
Inside a migration engagement.
A clean migration is the difference between trusting the new system on day one and spending six months reconciling. Every line below is part of the SOW.
Master data migration
Customers, suppliers, products, BoMs, price lists, payment terms, fiscal positions — cleaned, deduplicated, then loaded.
Opening balances
Trial balance, AR ageing, AP ageing, stock-on-hand by location, fixed asset register — reconciled against the legacy system.
Optional transaction history
Up to 5 years of historical sales, purchases and journals if continuity reporting requires it. Quoted as a separate module.
Chart of accounts re-mapping
Legacy COA mapped to a UAE-FTA-aligned structure. One-time reclass documented for audit.
Tax code mapping
Legacy tax codes mapped to Odoo tax codes one-to-one for VAT 201 continuity. ZATCA mapping for Saudi entities.
Document attachments
PDF invoices, scanned receipts and signed contracts brought across as attachments on the corresponding Odoo records.
Reconciliation reporting
Automated daily reconciliation report between legacy and Odoo during parallel run. Variance threshold flags built in.
Legacy archive
Read-only legacy system preserved for the audit retention period — accessible to finance for historical lookups but frozen against new entries.
Process
Audit, extract, reconcile, cut over.
Cutover day should be the third dry run. By then we have already loaded your data three times, reconciled it three times, and surprises are rare.
- Phase 01
Audit
Inventory the data: master data tables, transactional volume, custom fields, attachments. Decide history vs balances. Output: data migration plan.
- Phase 02
Extract
Pull data via TDL/XML for Tally, API for QuickBooks Online, SQL exports for SAP and on-prem systems. Versioned dumps stored under your namespace.
- Phase 03
Transform
Map legacy fields to Odoo data model. Reclassify chart of accounts to FTA categories. Resolve duplicates, fix encoding, normalize currencies.
- Phase 04
Load
Loaded into a staging Odoo instance using ORM-clean import scripts — not raw SQL. Repeatable so we can re-run on cutover day.
- Phase 05
Reconcile
Trial balance, AR ageing, AP ageing, stock balances tied out against the legacy system. Variances investigated and resolved before sign-off.
- Phase 06
Parallel run
Optional 2 to 4 weeks of running both systems with a daily reconciliation report. Recommended for higher-risk industries.
- Phase 07
Cutover
Final balances re-loaded on cutover weekend. Legacy system frozen and archived. Day-one transactions on Odoo supervised on-site.
- Phase 08
Stabilize
Two weeks of post-cutover monitoring with finance and operations. Any reconciliation issue resolved inside the fixed fee.
Who this is for
Businesses outgrowing their legacy stack.
UAE and GCC businesses currently running Tally, QuickBooks, SAP B1, on-prem SAP, Sage, NAV, Zoho, or a homegrown Access / SQL Server system — and ready to consolidate onto Odoo as a single integrated stack.
The most common trigger is operational: the legacy system can no longer represent the business. Multi-entity expansion has outgrown a single-entity Tally book. A second warehouse has overwhelmed a QuickBooks inventory model that was never designed for it. A homegrown system has lost the developer who built it. SAP B1 is fine but the per-user cost no longer makes sense as the team grows. The pattern is the same: the system stopped fitting, and the workarounds have started costing more than a migration would.
Bad fit: a freshly stood-up QuickBooks instance with three months of history. The cost-benefit on a migration that early rarely makes sense. We will say so.
Pricing approach
Fixed-fee migration phase.
Migration is priced as a fixed-fee phase inside a broader implementation engagement, or as a standalone fixed-fee project for clients already on Odoo who are consolidating an entity.
The price is driven by three variables: the legacy system (some have cleaner exports than others), the data scope (balances only vs full history), and the entity count. We give you a number after Discovery — never before. If you decide on history rather than balances later, that is a documented variation with its own line item, not an open-ended ask.
What success looks like
Finance trusts the new books on day one.
A successful migration is one where the CFO signs off the trial balance on cutover day without reservations, and the next VAT 201 return is filed from Odoo on time without a reconciliation crisis.
That is the bar. We have hit it on Tally-to-Odoo, QuickBooks-to-Odoo and SAP-to-Odoo migrations across the UAE, Saudi and Oman. Browse case studies for specific migration stories.
FAQ
Migration questions, answered.
Which legacy systems do you migrate from? +
The four most common in the GCC: Tally (every variant — Prime, ERP 9, on-prem), QuickBooks (Online and Desktop), SAP (B1 and on-prem ECC), and homegrown systems usually built on Access, FoxPro, or a Visual Basic front-end with a SQL Server back-end. We have also done migrations from Sage, Microsoft Dynamics NAV / Business Central, Zoho Books, Wave and a long tail of vertical-specific tools. If your data lives somewhere with an export option, we can usually migrate it.
Will you migrate historical transactions or just balances? +
Both options are on the table — you choose. Most clients migrate opening balances only (trial balance, AR/AP ageing, stock balances, fixed assets) and leave the legacy system available read-only for historical reference. A smaller group asks us to migrate full transaction history — typically 2 to 5 years — for reporting continuity. The latter takes longer and costs more, and we will be honest about whether the cost is worth it for your reporting needs.
How do you ensure the data is clean? +
We run a parallel reconciliation week before cutover. Trial balance reconciled to the rupee. AR ageing tied out customer by customer. AP ageing tied out supplier by supplier. Stock balances reconciled SKU by SKU against a physical count where feasible. If something does not tie, we find it and fix it before go-live, not after. This step is non-negotiable in our SOWs.
How long does a migration take? +
For a typical SME (one entity, one currency, three years of master data, opening balances only) the migration phase runs 3 to 5 weeks inside the broader implementation timeline. For multi-entity groups with full transaction history it can run 8 to 12 weeks. Migration is usually not the bottleneck on a project — configuration and UAT are.
What about VAT and FTA filings continuity? +
We handle this carefully. Tax codes are mapped one-to-one between the legacy system and Odoo so that VAT 201 returns post-migration look continuous to the FTA. Where the legacy chart of accounts grouped tax differently, we run a one-time reclass and document it. For Saudi clients we do the equivalent with ZATCA Phase 2 e-invoicing.
Can we run the old and new system in parallel for a month? +
You can — and for higher-risk migrations we recommend exactly that. Parallel running for 2 to 4 weeks across finance and inventory catches edge cases that no UAT script will. We support parallel running by automating a daily reconciliation report between the two systems so finance is not doing the comparison by hand.
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