A go-live date is a planning target. Readiness is something the team demonstrates. Treating those as the same thing is how unresolved data and process questions arrive in production.
Define the first operating scope
List the companies, modules, workflows, integrations and reports included in the first release. Give each a business owner. Record what will remain outside the system temporarily and how that boundary will be controlled.
Keep the scope small enough to test completely, but complete enough to support an end-to-end process. Launching only the first half of a transaction chain can leave the difficult reconciliation work outside the system.
Rehearse migration with balances
Clean customers, suppliers, items and account mappings before importing. Reconcile opening balances to approved source records. For inventory, check quantity, value, unit of measure and location; for receivables and payables, check the open documents that explain the total.
Run a trial migration and document exceptions. A successful file upload is not evidence that the business data is correct.
Test real roles and exceptions
Ask users to perform their own tasks with their intended permissions. Include rejected approvals, partial receipts, credit notes and period boundaries where relevant. Verify reports against a known sample and record the result.
Training should use these workflows. People need to know how to recover from ordinary mistakes, not only how to enter a perfect transaction.
Make cutover responsibilities explicit
Specify the final legacy transaction point, data extraction, import, reconciliation, approval and opening for users. Agree how the team decides to delay or reverse the cutover if acceptance fails, including how new transactions would be handled.
After launch, give exceptions a visible queue and named owners. Track unresolved issues separately from future enhancements so the first weeks remain manageable.
Explore System Setup and the relevant DNA apps. The most useful readiness pack contains reconciled data, passed scenarios, trained owners and a rehearsed cutover sequence.
