Locking a Loan with LQB
This guide covers the full lock lifecycle when you are using LendingQB (LQB) as your Loan Origination System. Instead of creating loans directly in the Lender Price system, you retrieve loan data from LQB, price it through the API, and lock the selected rate.
Postman Collection
A ready-to-use Postman collection for the entire LQB workflow is available. Contact your Lender Price representative to obtain it.
Workflow Overview
Lock Status Flow
Guide Pages
This workflow is split across the following pages:
- Price and Create Quote — Authenticate, retrieve a loan from LQB, and search for pricing.
- Export Pricing and Lock — Set scenario, lock, push pricing to LQB, and get next lock status.
- Post-Lock Operations — Request lock, approve/deny, extension, price concession, cancel, and more.
Key Endpoints
| Operation | Endpoint | Method |
|---|---|---|
| Authenticate | {{authDomain}}/oauth/token | POST |
| Get/Create Price Quote | /rest/v1/integration/ellie/loan/getPriceQuoteFromLosLoanId/{lqbLoanRef} | GET |
| Get Price Quote | /rest/v1/lp-ppe-api/los/price-quote/get/{priceQuoteId} | GET |
| Get Pricing (initial) | /rest/v1/lp-ppe-api/pricing/search?userIdToUse={userId} | POST |
| Get Pricing (with lock) | /rest/v1/lp-ppe-api/price-quote/{priceQuoteId}/search?userIdToUse={userId} | POST |
| Set Scenario | /rest/v1/lp-ppe-api/price-quote/setScenarioFromResult/EllieMaeQuoteRequest | POST |
| Lock With Scenario | /rest/v1/lp-ppe-api/price-quote/lockWithScenario | POST |
| Push Pricing to LQB | /rest/v1/integration/ellie/loan/updateloan/{priceQuoteId}/parsetype/pricing | PUT |
| Get Next Lock Status | /rest/v1/lp-ppe-api/price-quote/getNextLockStatus/{lockId}/{lockEventId} | GET |
| Add Lock Event | /rest/v1/lp-ppe-api/price-quote/addLockEvent | POST |
Authentication
All LQB endpoints use OAuth2 Bearer token authentication. You must first obtain an access token via the OAuth2 password grant, then pass it as Authorization: Bearer {{accessToken}} on every subsequent request.
See Step 0 in Price and Create Quote for full details.