Missing Stock Entry Fields not showing in the Form

Hello! This is my first post. Excited to be part of this amazing community.

Trying to figure out why these fields in the Stock Entry Doctype is not showing up in its relative form. These are fields (Purchase Order, Delivery Note etc) that seems to be pre-configured and could be useful for me yet I cant access them. Please note that I have checked if they were hidden and they are not. Please help! Thanks

For more context, The fields above in the images above do now appear in the form.