Power Fx function

frm.LastSubmit — Power Fx function reference

Get the record just saved.

Syntax

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Form.LastSubmit

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frmEdit.LastSubmit.ID

→ New record’s ID

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Navigate(scrDetail, ScreenTransition.None, {locId: frmTask.LastSubmit.ID})

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Notify("Saved task #" & frmTask.LastSubmit.ID, NotificationType.Success)

LastSubmit is only populated after a successful SubmitForm — reading it in OnVisible or before the first save returns blank.
It carries server-generated fields (autonumber ID, Created, Modified), making it the reliable way to get a new record's ID rather than re-querying right after submit.

From Forms