According to the minority report, the White House made some "mistakes" during the scandal, which transferred funds weapons sales to Iran to support the Contras in Nicaragua.
It was not about a breakin of the Democratic headquarters at the Watergate or even about how funds from arms sales in Iran were diverted to aid the Contras in Nicaragua.
Reagan sounds genuinely surprised in his diary about the Iran-contra mess, in which his people sold weapons to Iran and then sent some of the money to the contras, the rebels trying to overthrow the government of Nicaragua.