Agree on decisions before deliverables
A project can produce many documents and still leave its most important decisions unresolved. Start with an agreed scope, clear decision owners and a simple process for recording changes. Identify the policies that must be settled before configuration can proceed.
Understand what the data can support
Inventory source systems, historical records and retention needs. Review representative samples for missing keys, duplicates and inconsistent dates. Plan cleansing and reconciliation as visible work, with business owners involved in acceptance.
Test the connections, not just the screens
Prepare end-to-end scenarios that cross modules and system boundaries. Include exceptions, changes with effective dates and different security roles. Make expected results specific enough that a business user can say whether the process works.
Plan for the first day after launch
Document support ownership, issue triage, cutover dependencies and rollback criteria where applicable. Rehearse critical steps. The launch plan should explain how teams will recognize and respond to a problem, not simply when each task will happen.
A useful readiness review
Ask whether policy owners are available, data issues have accountable owners, integration dependencies are understood, test environments are ready and users have time for acceptance testing. Unanswered questions are inputs to planning. They should not be treated as evidence of readiness.
