Your equity list was built on a deal that may not exist anymore
Here's how most mining works — it takes the original deal from your DMS, sometimes three or four years old, and projects it forward as if the customer froze in time.
Data decay
Customers total cars, pay off early, refinance, move away or trade somewhere else. So your salesperson calls about equity in a vehicle the customer no longer owns, and the list quietly trains your team to stop trusting it. Even when the car is still in the driveway, equity alone doesn't tell you who can move, because a customer can hold real equity and stay put when a newer car at today's rates pushes the payment past what they will accept.
Without today's credit and payment in the picture, you're guessing.