I've been struggling with this for a few days and can't figure it out. I have a Gallery on one screen connected to a SharePoint list and I want to use some of the fields from the selected Item to populate a new form for a different SharePoint list which is on a different screen.
If I don't select an Item in the gallery it will just populate the form with top Item and this will submit as expected. However, if I try to select another Item I get this "data source might be invalid" error. I can't work out what the issue is, I've tried publishing the App and recreating the New form but the issue persists.
I found a few similar issues online but none of them seem to address my problem.
Does anyone have any ideas?
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Thanks for the response.
So first Gallery witrh button that changes screen to the one with the form:
If the top item here is left as selected then the form works.
The apply button brings us to the screen with the form:
The default for the input boxes on each field are something like:
and the button just has:
is that enough?
That's because the gallery filters contains an if function, I wouldn't have thought that would affect the submission of the form.
I don't think the list will ever contain more than 2000 items so it shouldn't be an issue.
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