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Dynamics 365 Community / Forums / Small and medium business | Business Central, N... / Time for migration fro...
Small and medium business | Business Central, N...
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Time for migration from legacy ERP to Business Central

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Posted on by CU22061718-1 2
From Legacy ERP to migrate to business central how much time it can take . What method we can prefer. What we should care for this before migration for pre requisite.
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Dynamics 365 Business Central migration
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    OussamaSabbouh Profile Picture
    OussamaSabbouh 17,931 Super User 2026 Season 1 on at
    Hello,
    There is no fixed time for migrating from a legacy ERP to Business Central; it mainly depends on data volume, data quality, number of companies, customizations, integrations, and whether you migrate only opening balances or full history. As a simple rule, a small clean migration can take a few weeks, while a medium/complex project can take months. The preferred approach is usually: migrate master data first like customers, vendors, items, chart of accounts, dimensions, banks, etc.; then migrate opening balances/open documents like customer/vendor balances, inventory opening, bank balances, open sales/purchase orders if needed; and keep the legacy ERP read-only for old history instead of trying to bring everything. If the legacy system is not a supported migration source, use Configuration Packages/Excel, XMLports, or a custom migration extension/API, but always do at least one sandbox test migration, validate balances with finance, clean duplicate/blocked/old data before import, freeze transactions before go-live, and prepare mapping for posting groups, dimensions, tax/VAT, item costing, number series, users, permissions, and reports.
     
    Regards,
    Oussama Sabbouh

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