I have a PowerApp that displays a list of cases that is stored in Dynamics CRM environment. Once a case is selected, a gallery located in the middle of the app populates some of the fields of the same Dynamics CRM source. I have another Gallery located in the right part of the app and it's datasource is a SQL database table which has a series of fields (including a identifier code that is also present in dynamics CRM). I need people to go, select a case, add information to the new SQL fields but also to be able to EDIT these fields information once they've already submitted. So, when they come back, select a case that has previous data stored in those SQL fields, the SQL gallery populates existing information in SQL database. For that, I'm using EditForm function and its not working. "No items to display" message is showing.
IF you could give more details, and some code(or screenshots), somebody could help you with a more specific answer. With what you said, some of the reasons could be not choosing what fields to show, or having an error in your formula. Post some code and we'll see what is going on.