Possible Clues:

• 'My mistake'
• "You were right after all"
• "You were right!"
• "My mistake"
• Credit card with notes lost -- my mistake
• Accident insurer finally sorted out, giving apology for mistake
• You're right, it's wrong — and fixed
• Wrong admission
• ... and it's me that's in the wrong!
• Acknowledgement of mistake given doctrines traced incorrectly