Invalid formula. Expected a value compatible with 'DataSource'

[stumac_31]

Dear all

Coming back to this after a couple of months, my app is no longer working. 

On my editscreen I have an error I can't figure out as it does not seem to be related to a data card/source.

It seems to the page as a whole but I cant work out what it is

The command bar has the instruction: BrowseGallery1.Selected

The error message is 'Invalid formula. Expected a value compatible with 'DataSource'.

See attached picture

I recently added a new screen, but cannot see how this is connected.

[Anonymous]

Are the data sources for the Gallery and the EditForm the same?

[v-monli-msft · Accepted solution]

Hi @stumac_31,

Please try to remove the data source and readd it again. If this still does not solve the issue, please try to create a new app the test.

In addition, what is the data source and what is the related formulas?

Regards,

Mona

[akharns]

Is it possible to remove and re-add the data source without rebuilding the entire application?  That sounds like a very impactful recover step.  So many objects are tied directly to data elements in the data source.