I got the same error “unable to update row in table <
> "invalid request provided to Appsheet database”. After verification I realised that Data Rows with duplicate values in Key RESOLVED - Column were not syncing. Duplicate values in Key Column got created because I directly copy pasted rows in ‘Appsheet Database’ (it didn’t restrict duplicate creation).I changed the Duplicate Values in Key Column to unique values and thereafter the above sync error got resolved.