Business Rule : Master Data Service : Unique Values in column combination in single row only

Hi All,

I have a scenario in which I have 6 columns in an entity of master data services.Say C1,C2,C3,C4,C5,C6. I need to create a single business rule in such a way that

values in c1!=c2!=c3!=c4!=c5!=c6 in single row. Here , if any column values matches ,then on click of 'save,ok' button ,record must not be inserted into entity.It should give prompt error message to end user.

Note :1) In Single Row 2)Single Business Rule 3)Prevent insertion of data with error messages.

Please help on above scenario.