Always save a copy of your sent reply and any delivery receipts for your personal records.
Or for a mistake: The error in the report was due to a technical glitch in the software which corrupted the data column. I was unaware of the corruption until the audit was performed.
: If your explanation involves medical issues, family emergencies, or technical failures, include supporting documentation. Future Commitment
If you have medical certificates, receipts, or emails that support your case, mention them in the letter and attach copies.
Summary