https://www.uscis.gov/forms/filing-guidance/how-to-make-an-expedite-request
Clear USCIS error.
Not every circumstance that fits in one of these categories will result in expedited processing.
For more information, see USCIS Policy Manual, Volume 1, Part A, Public Services, Chapter 5, Requests to Expedite Applications or Petitions [1 USCIS-PM A.5].
Not sure I have seen a case where there has been a clear error and it has not been expedited.