The plaintiff developer purchased limited partnership units back from the defendant investor.
The plaintiff mistakenly calculated the purchase price based on an assumed original investment of $300,000 instead of the actual $150,000, resulting in a windfall to the defendant.
Upon discovering the error, the plaintiff sought rectification or rescission.
The court found that the transaction proceeded on a common mistake and that the defendant could not rely on the entire agreement clause to take advantage of an obvious error she could have verified.
The court granted the plaintiff equitable relief, allowing the defendant to elect between rescission or rectification (returning the $132,300 overpayment).