Some information about the Extras of a contract.

Here's where you can find this:

1. Search a contract from a customer.

2. Extras fields explained.
Sales code 
The reference number of the addendum contract 
The reference of the addendum contract if that is filled in the addendum contract
Creation date 
The date on which the addendum contract was created
Sales total 
The total amount of the addendum contract 
3. Check this page to find out more about how you can add Extras to a contract.