# Keep a paper trail

Lesson 4 of [Check an ESA vendor before you spend](https://esavendors.fyi/academy/check-an-esa-vendor-before-you-spend.md), 15 minutes.

A paper trail helps you if the program asks about a purchase later. What to keep - The order confirmation. - An itemised invoice with your child's name, the dates of service and the learning purpose. - Each approval message from the program, with the name of the person who approved it and the date.…

The rest of this lesson is for learners enrolled in the course. [See how Check an ESA vendor before you spend works](https://esavendors.fyi/academy/check-an-esa-vendor-before-you-spend.md).

Also on the [web page](https://esavendors.fyi/academy/check-an-esa-vendor-before-you-spend/keep-a-paper-trail).