How to Migrate Your ERP to Odoo

Everything we've learned moving companies off SAP, Sage, Microsoft Dynamics, QuickBooks, and spreadsheets onto Odoo: what to migrate, in what order, and where projects usually go wrong.

Why Migrate to Odoo

Benefits of Switching to Odoo

Most migration calls we get start with the same complaints: license costs, rigid workflows, dated screens. Here's what changes with Odoo.

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Cost Savings

Eliminate expensive per-user licensing. With Odoo Community, pay zero licensing fees regardless of how many users you have.

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Ultimate Flexibility

The code is open. If you need a field, report, or workflow changed, any developer can do it without a vendor's permission.

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Modern Interface

The interface looks and works like the web apps your team already uses at home, which cuts training time noticeably.

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Vast Ecosystem

44,000+ OCA modules available. If you need a feature, chances are it already exists in the community.

Migration Planning

Plan Your Migration Right

ERP migrations fail in the planning stage, not the technical one. Work through these six phases in order.

01
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Assessment

Audit your current system, document all processes, identify pain points, and catalog the data to migrate. Everything else depends on getting this step right.

02
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Planning

Build the roadmap: who does what, by when, and what happens if a step slips. Write down how you will know the migration worked.

03
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Data Preparation

Clean and validate source data. Remove duplicates, standardize formats, and map fields to Odoo's data structure.

04
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Migration

Execute the data migration in phases. Start with master data, then transactional data. Test thoroughly after each batch.

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Validation

Verify all data has migrated correctly. Run reconciliation reports, test business processes, and fix any discrepancies.

06
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Golive

Description for golive phase

Timeline Pressure

Most migrations take 2-6 months depending on complexity. A small business with basic needs can move in 4-8 weeks, while an enterprise with complex workflows may need 4-6 months. We recommend going live with the core modules first and adding the rest over time.

Migration Paths

Migrate from Any System

Pick your current system below. Each one has its own quirks, and we've dealt with all of them.

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SAP to Odoo

Business One, S/4HANA

SAP is powerful but complex and expensive. Many mid-market companies find Odoo provides 90% of the functionality at 10% of the cost. Key migration considerations:

  • Map SAP modules to Odoo equivalents
  • Export master data via SAP extractors
  • Convert custom ABAP to Python
  • Retrain users on simpler interface
See Odoo vs SAP comparison
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Dynamics to Odoo

Dynamics 365, NAV, AX

Microsoft Dynamics users often migrate to Odoo seeking lower costs and simpler customization. The transition is typically smooth due to similar module structures:

  • Similar CRM & Sales module concepts
  • Export via SQL or Power Automate
  • Recreate workflows in Odoo Studio
  • Power BI replaced by Odoo dashboards
See Odoo vs Dynamics comparison
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Sage to Odoo

Sage 50, 100, 200, X3

Sage users often outgrow the platform or seek a more integrated solution. Odoo offers better module integration and a cleaner upgrade path:

  • Export chart of accounts easily
  • Customer/vendor data maps directly
  • Inventory data with full history
  • Better multi-company support
See Odoo vs Sage comparison
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QuickBooks to Odoo

Desktop & Online

QuickBooks is great for basic accounting, but growing businesses need more. Odoo provides the same ease of use plus inventory, CRM, manufacturing, and more:

  • Export QB data via IIF or Excel
  • Chart of accounts maps cleanly
  • Keep full transaction history
  • Add inventory & CRM seamlessly
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Spreadsheets to Odoo

Excel, Google Sheets

Many businesses start on spreadsheets and outgrow them. Odoo works well as a first ERP because its list views feel familiar to Excel users:

  • Import directly from Excel/CSV
  • Map columns to Odoo fields
  • Keep familiar spreadsheet views
  • Add automation gradually
Data Migration

What Data Gets Migrated

Deciding what to bring over, and what to leave in the old system, matters as much as the migration itself.

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Master Data

Core business entities that form the foundation of your operations. This data is always migrated.

  • Customers & contacts
  • Vendors & suppliers
  • Products & services
  • Chart of accounts
  • Employees & users
Priority: Essential
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Transactional Data

Active business transactions. Open items are always migrated; closed items depend on reporting needs.

  • Open sales orders
  • Open purchase orders
  • Unpaid invoices
  • Current inventory
  • Pending payments
Priority: High
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Historical Data

Past transactions for reporting and analysis. Consider what's truly needed vs. keeping the old system for reference.

  • Closed sales history
  • Past invoices
  • Historical reports
  • Audit trails
  • Archived documents
Priority: Case by Case

Data Migration Best Practices

1

Clean your data before migration. Fix duplicates, standardize formats, and remove obsolete records in the source system.

2

Start fresh with opening balances when possible. Migrating years of history often adds complexity without value.

3

Validate migrated data thoroughly. Run reconciliation reports comparing totals between old and new systems.

Challenges & Solutions

Common Migration Challenges

Every migration has obstacles. Here are the most common ones and how we solve them.

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Data Quality Issues

Dirty data in the source system leads to problems in Odoo.

Solution: We run data audits before migration and clean records systematically.

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User Adoption

Teams resist change and struggle with new interfaces.

Solution: We provide hands-on training and create custom guides for each role.

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Custom Requirements

Old system had customizations that seem irreplaceable.

Solution: We analyze each custom feature and find Odoo-native alternatives first.

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Integration Complexity

Multiple systems connected to the old ERP need reconnecting.

Solution: We map all integrations early and use Odoo's API framework.

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Timeline Pressure

Business can't afford extended downtime or delays.

Solution: We use parallel running and phased cutover to minimize disruption.

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Knowledge Transfer

Business logic exists only in people's heads, not documentation.

Solution: We conduct thorough discovery sessions and document everything.

After Migration

Post-Migration Success

Go-live is the halfway point. This is what we keep doing afterwards so the new system sticks.

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User Training

Role-based training sessions ensure everyone knows how to use their modules effectively.

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Ongoing Support

Dedicated support during the stabilization period and beyond for any questions or issues.

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System Optimization

Fine-tune workflows, add automations, and optimize performance based on real usage.

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Regular Updates

Keep your Odoo updated with security patches and new features as they release.

Migration Success Metrics

How we measure a successful migration

100%
Data Accuracy
<1%
Post-Go-Live Issues
2 weeks
User Proficiency
30%+
Time Savings
Aerya Migration Services

Ready to Migrate?

We've moved companies off every system on this page. Tell us what you're running and we'll map out the migration for you.

Free migration assessment and roadmap
Fixed-price migration packages available
Parallel running to minimize risk
Post-migration support included
Community Edition specialists (zero licensing)
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