[andwur]

You likely ran into anti-fraud provisions with that scenario, specifically identity theft prevention. Having worked at a similar business for years, a trend for high fraud occurrence is squeaky clean credit file-high income applying for low value credit.

These have a well above average occurrence of identity theft cases, presumably because the guaranteed affordability test pass combined with low value makes it easy to get the loan and subsequently unlikely anyone will bother to chase it when they identify it as fraudulent.

It's easier, and cheaper, as a provider to just reject all originating accounts in this scenario. Similar to applying for a mortgage: if your credit parameters vastly mismatch your affordability you will get a LOT more questions asked.

[kmeisthax]

I guess this is a weird corollary to "the ideal amount of fraud is nonzero" - things that look like a sure bet are actually far more risky.