: While the number matches your query, this specific event in Philadelphia covers advanced SQL Server performance topics like index selectivity , "the tipping point," and improving join performance with indexes.
In the SSIS source code the ACE provider error path was given the internal identifier 835 when the product team logged it. It never became a public “error number” like DTS_E_OLEDBERROR (0xC0202009), but the community started referring to the whole symptom as SSIS‑835 . The moniker stuck. SSIS-835