Business Central Go-Live Checklist (Free, PDF/Excel)

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9 critical items still open - these are the highest-risk gaps.

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Data and opening balances

Customers, vendors, items and chart of accounts loaded and spot-checked against the legacy systemCRITICALOpening G/L balances posted through a general journal and reconciled to the trial balanceCRITICALOpen customer and vendor invoices loaded with original dates and reconcile to control accountsCRITICALInventory quantities and values loaded through item journals and reconciled to the stock valuationOpen sales and purchase orders loaded or reentered with agreed cutoff ruleProduction BOMs and routings certified and linked to itemsBank account balances and last statement reconciledDuplicate and obsolete master data removed before the final load

Setup and posting

General Ledger Setup, number series and fiscal year with accounting periods confirmedCRITICALGeneral, VAT and inventory posting setup tested for each item and customer typeCRITICALDimensions and default dimension rules agreed with finance and testedPayment terms, payment methods and currencies with exchange rates loadedItem templates, costing methods and reordering policies set per item categoryReporting layouts, document layouts and email templates approvedJob queue entries for cost adjustment and posting batches scheduledCompanies, user setup and posting date restrictions configured

Security and users

Permission sets assigned per role and tested with a representative user for each roleCRITICALSegregation of duties reviewed for posting, payments and master dataSUPER permission restricted to a small named groupLicensing assigned correctly to each user in Microsoft 365 admin centerMulti-factor authentication and conditional access confirmed for adminsTest and sandbox environments separated from production

Integrations and reporting

Every integration tested end to end with production-like data and error handling checkedCRITICALAPI or web service credentials stored securely and expiry dates documentedPower BI or Excel reports validated against standard Business Central reportsBank file formats and EDI or e-commerce feeds testedMonitoring and alerts for failed job queue entries configured

Cutover and support

User acceptance test signed off with open defects triagedCRITICALCutover plan with owners, times and checkpoints rehearsed at least onceCRITICALFallback decision point and rollback steps written downKey users trained and quick reference guides distributedLegacy system set read-only on the cutover dateHypercare support roster and issue log in place for the first closing periodSandbox refreshed for post go-live testing of changes

Do not go live with any critical item unchecked. Non-critical items can be planned as post go-live tasks with a named owner and date.

Independent go-live review

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How to use the checklist

Work through each group with the owner of that area: finance for balances and posting, operations for items and BOMs, IT for security and integrations. Tick an item only when there is evidence, such as a reconciliation, a test result or a sign-off. Critical items are those where a gap has financial or compliance consequences, so treat them as blockers. Export the result to share it with the steering group.

Opening balances done safely

Opening balances are normally posted with journals dated at the cutover, then reconciled to the legacy trial balance. Customer and vendor balances should be loaded as open entries so they can be applied later. Inventory should be loaded by quantity and value so the inventory account agrees with the G/L. Reconcile each subledger to its control account before release, and keep the reconciliation file as audit evidence.

Pick a cutover date at a period boundary
Reconcile subledger to G/L in the same session
Keep a dated copy of the legacy trial balance

Security and posting setup

Most post go-live incidents are caused by missing permissions or incomplete posting groups. Test every role with a real user, not an administrator. Create one item, customer and vendor per posting combination and run a full transaction through to the ledger. Confirm that dimensions flow as expected and that period restrictions prevent posting into closed periods.

Common mistakes

Teams often leave integration testing too late and discover mapping gaps in the final week. Another common mistake is not rehearsing the cutover, so the real run takes twice as long as planned. Skipping a rollback decision point is the third. Finally, avoid loading dirty master data on the assumption it will be cleaned later, because cleanup after posting is slow.

Frequently Asked Questions

How long before go-live should we start this checklist?

Start about eight to twelve weeks before cutover for most small and mid-size projects, and review it weekly. The data and security groups need the longest lead time, so they should be started first.

Which items are truly blockers?

Those marked critical: reconciled opening balances, tested posting setup, role-based permissions, working integrations, signed-off user acceptance testing and a rehearsed cutover. Any of these missing risks wrong financials or a stalled business on day one.

Should we run old and new systems in parallel?

Full parallel running doubles the workload and is rarely needed. A common approach is a short parallel check for one cycle of key reports, then set the legacy system read-only and keep it for reference.

Does this apply to NAV to Business Central upgrades?

Mostly yes. Upgrades add technical steps such as converting extensions and data, but security, posting setup, integrations and user acceptance still need the same discipline before users return to the system.

If you want an independent check of data quality before loading, we can profile your legacy data on-premises and list duplicates and gaps for your team to resolve.

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