I've created a PowerApps form for my SharePoint list and published it. When I click the new button or try to edit the item, its trying to open the default forms. I get a error, something went wrong "Unable to find the default new form for list". The list is in the modern view and the From settings are set to Use a custom form created in PowerApps. This list was migrated from 2013 and had a Nintex form attached to it. We are ditching Nintex and converting to PowerApps. In SharePoint designer there are no Forms and I cannot create new forms as it tells me "Cannot save list changes to server". This shouldn't matter as I'm using PowerApps. This is a strange one for sure. Anyone have this issue?
I would suggest starting over and using PowerApps to generate a complete app from your SharePoint list. It will do it automatically and only take a minute or two.
Do you have any update from Microsoft support . We are experiencing similar issue when a list is migrated from classic to modern & then customizing with Power apps list form.
Hello, yes. The solution was to open the site in SharePoint Designer. Copy the DispForm.aspx, EditForm.aspx, and the NewForm.aspx from a list that was working to the list that was broken. Open the forms and update the ListID to the broken list ID. You can do this by browsing All Files --> Lists --> Your List. This worked for me.
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