LOS implementation checklist

A practical checklist to plan scope, integrations, governance, testing, and rollout for a loan origination system implementation.

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What this template helps you do

Thin-slice rollout checklist (one product end-to-end)

Integration readiness checklist (retries, timeouts, evidence)

Governance questions for policy and workflow change

Testing scenarios and operational readiness prompts

The best implementations start small and prove the core mechanics end-to-end. Use this checklist to align stakeholders, sequence integrations, and surface delivery risk in the first 30 days, not the last 30.

Worksheet · Recommended RFP sections

01
Scope the thin slice
One product, one channel, one decision path, including evidence and downstream handoffs.
02
Confirm operating model and roles
Who owns workflow, policy, integrations, templates, and incidents.
03
Integration readiness
Bureaus, IDV, valuations, Open Banking: sandboxes, test data, retries, observability.
04
Policy and decisioning baseline
Rules, scorecards, override paths, and versioning for safe change.
05
Workflow and case management
Queues, SLAs, exception paths, four-eyes controls, and re-routing rules.
06
Evidence and auditability
What every decision, override, and integration call captures by default.
07
Testing and pre-flight scenarios
Happy path, edge cases, failure modes, and operational dry runs.
08
Go-live and first 90 days
Runbooks, dashboards, support model, and explicit rollback criteria.

Preview · sample questions

Question bank preview

Scope & sequencing

·
What does the thin slice cover and exclude, and why?
·
Which products and channels follow, and on what cadence?
·
What is the definition of done for go-live?

Integrations

·
Which integrations are pre-built vs need delivery work?
·
How are retries, timeouts, and partial failures handled by default?
·
What evidence is captured for each integration call?

Policy & decisioning

·
How are rules and scorecards versioned, tested, and approved?
·
How are overrides logged and made auditable?
·
How do in-flight cases respond when policy changes?

Governance & change

·
Who can change workflow, policy, integrations, and templates?
·
What approvals are required for each type of change?
·
How does rollback work safely?

Testing & assurance

·
Which scenarios are covered by automated tests?
·
How do we test integration failure modes pre-launch?
·
What is the UAT exit criteria and sign-off?

Operational readiness

·
Are runbooks, dashboards, and escalation paths ready?
·
What does day-2 support look like for both teams?
·
How is performance, throughput, and SLA adherence measured?

Tip

Treat operational readiness as a release gate, not a footnote. Most program slippage shows up here, not in build, and is the cheapest place to catch it.