We made a mistake here. We own up to it. We acknowledge that mistake and we want to make sure it doesn't happen again.

We acknowledge this mistake, we apologize for this mistake and we will take steps to prevent such an occurrence in the future.

The proactive approach to a mistake is to acknowledge it instantly, correct and learn from it.

some time you are very much sure and there where you make mistake.

I think Duncan's made a mistake,

My mistake was I stayed there too long,