Can you say the Field numbers in the form(s) that you wish to hide? It might also be useful to describe from who you want to hide them and why, as there may be a permissions settings that could be applied.
Purchase Invoice > Items > Received Qty, Rejected Qty
Purchase Invoice Item > Section for Warehouse
We do not use these fields as of right now. These are just a few, there are more.
We’d like to hide them from the end-users, as they aren’t savvy with the system for the time being. Once, they are used to the flow, we plan to implement additional workflows as necessities demand.