Different Granulaity for UTC and Local Time

Hi All

I really need help on this soon...

So I have a fact table with UTC column in it, with a granuality of minutes.

Now I want to add a dimension of Local Time and my table has primary key on UTC,TimeZone and it has a local time column in it too. LocalTime table has a granuallity of Minutes as well.

Something similar to this

UTC, TimeZone, LocalTime

When I create a dimension of LocalTime, I can create a logical key in the DSV with UTC and TimeZone columns, but when I want to create a dimension Key, i have to combine the UTC and TimeZone together. So the DimensionKey is on UTC and TimeZone and DimensionName is LocalTime.

Now when I try to do the dimensionUsage and link my fact table Utc column with LocalTime Dimension Key (utc,Timezonekey) It gives me an error on granulaity saying that they dont have the same granulaity.

How can I go about solving this problem.

Please help

Thanks

-Sarah