Expired vaccinations not showing in confirmation email

If someone reports that a pet(s) has expired vaccines but those vaccines arent showing up in the confirmation email, there are a few things to check for this.

1. Do they have their vaccines marked as required?
   
   In desktop: File>Lists>Vaccinations.
   
   
   
   In HG/Cloud: Setup>Lists>Vaccines.
   
   
   
   If they don't have vaccines marked as required, make sure they are marked as such and continue troubleshooting.
   
   
2. Does the vaccine only have an expiration date and not a "given" date?
   
   If so, a date needs to be entered here in order for the expired vaccine to show up on the confirmation emails.