"When working for (X company) as a/an (X position title), we had to complete a project (... what happened in this project which resulted in X mistake on your end). I soon realized this was due to miscommunication as I did not adequately understand my colleague's points she had communicated via email - and I should have instead requested an in-person meeting or a phone call as soon as possible as I had doubts about what needed to be done next. To resolve the situation, I (... what you did to resolve the situation and successfully complete the project in a timely fashion, and what was the final outcome)."