I’m having a problem creating a new calendar form using the new Forms.
Is show error: "Invalid URL value. A URL field contains invalid data. Please check the value and try again."
I only create new Calendar list base on Calendar list template of SharePoint. I do not add any column more.
And my new form do not use All Day Event, Recurrent field. I only show follow fields on new Form: Title, Location, Start Time, End Time, Description, Category.
Now, Plumsail form can create new item Ok without All Day Event, Recurrence on form.
But I still see "All Day Event", Recurrence that is blank on New Form after I added that column to form.
Forms Designer is designed to work with SharePoint Classic UI. If your site uses Modern UI, but the forms are designed in Forms Designer, when you open a form, the site will automatically switch to classic UI just for that form.