@ursNani
So your criteria for the <> is never going to be delegable (or at least not any time soon).
You would need to either:
A) Implement a different logic in a column in your datasource (i.e. a 'Not Revision?' column) that would contain the Not of your Revision column.
B) If your Parts In SAP result set will be less than 2000, then you can change your formula to the following:
With({_preFilter: Filter('Development Specs', 'Parts in SAP?')},
ClearCollect(CollALL,
Filter(_preFilter, !'Revision?')
)
)
C) Pull all records into your app (bad choice, but if there is no other option!)