How can I add custom Field with invoice date and number..?

I need some additional data to be printed and recorder like truck number and supply date our work line requires it… for example


What are you trying to add these custom fields to? Have you read the Guide: Use custom fields | Manager

like @tut said it can be achieved with custom fields.

but @john1793 if your question was about positioning these custom fields beside the document details, this can be achieved only by a custom theme. if you are familiar with programming you can easily do it yourself or you can hire someone locally to do it for you.