Assume that you mark a computed column as PERSISTED in a partitioned table in Microsoft SQL Server 2014 and 2016. When you try to rebuild a single partition of an index online on the table, an error message that resembles the following might occur.
Msg 4819, Level 16, State 1, Line LineNumber
Cannot bulk load. The bulk data stream was incorrectly specified as sorted or the data violates a uniqueness constraint imposed by the target table. Sort order incorrect for the following two rows: primary key of first row: (001, 9999, ABC, 987654321, YWZ, 98765), primary key of second row: (001, 0001, CDE, 123456789, YWZ, 123456).
Microsoft has confirmed that this is a problem in the Microsoft products that are listed in the "Applies to" section.