Dear {Name},
I need to give you a heads-up that I messed up on {assignment/project}. I'm already taking steps to rectify my error, including: {actions}.
You should also know that {details}. I'll keep you posted as the situation is put to rights.
I've learned from this experience and it won't happen again. I'm sorry to have put the firm in this situation.
Sincerely,
{Name}
Download this apology letter template — free!
Formatted and ready to use with Microsoft Word, Google Docs, or any other word processor that can open the .DOC file format.
Index of letter of apology templates