Index '%1!s!' cannot be created on table '%2!s!', because at least one key column is stored off-row. Index key columns memory-optimized ...

Index '%1!s!' cannot be created on table '%2!s!', because at least one key column is stored off-row. Index key columns memory-optimized tables must fit within the %3!s! byte limit for in-row data. Simplify the index key or reduce the size of the columns to fit within %4!s! bytes.