Defining Dimensions, Attribute Hierarchies for a Link Table(Many to Many)

I have 3 Tables in the Database
Table 1: Transactions (Fact Table) - PK(TransactionId)
Table 2: Relationship (Dimension1) - PK(Relationship Id), FK_TransactionId, FK_CompanyId, RelationshipType
Table 3: Companies (Dimension 2) - PK(CompanyId)
Table 2: Relationship table is a link table between Transactions & Companies to facilitate many to many relationship.
I defined Fact and Dimension tables accordingly but having issues defining Dimension & Attributes for Relationship tables
Relationship Dimension:
I have 3 hierarchy groups defined
Hierarchy 1 - Relation -Relationship Type,Relationship Id(PK)
Hierarchy 2 - Transaction - Transaction, Relationship Id(PK)
Hiearchy 3 - Company - CompanyId, Relationship Id(PK)
Defined the attribute relationship in the following way
RelationshipID(PK) ---> CompanyId , RelationshipID(PK) ---> TransactionId, RelationshipID(PK)
---> RelationshipTYpe
I am getting incorrect results when I deploy the cube. Not all the types are being displayed only 4 types are being displayed out of 27 types though there exists Transactions for all the Types.
To fix the incorrect results, I tried to break the Relationship Dimension into 2 dimensions seperating Transaction(Relationship Dim) & Company,Type (Companies Dim). I tried to configure a many
to many Relationship type between my Companies Dim & Fact Table Transaction. But I get the error that says
"Companies Dim many to many dimension in the Tansaction measure group requires that the granularity of the Relationship dimension is lower than that of the Relationship measure group "
Any help regarding how to difine Dimensions & Attribute Hierarchies on a Many to many link table is appreciated.

Hi Jaya,
According to your description, you are experiencing the issue when implement many to many relationship by using a bridge table in your SQL Server Analysis Services project, right?
Generally, a bridge table will have a surrogate key for the dimension and a surrogate key to the fact table or a degenerate dimension based on the fact table. Here are some blogs which describe how to implement many to many relationship using a bridge
table.
http://bifuture.blogspot.com/2011/06/ssaskimball-modeling-nm-relation.html
http://www.sqlchick.com/entries/2012/1/22/data-modeling-tip-when-using-many-to-many-bridge-tables-in-s.html
http://social.technet.microsoft.com/wiki/contents/articles/22202.a-practical-example-of-how-to-handle-simple-many-to-many-relationships-in-power-pivotssas-tabular-models.aspx
Regards,
Charlie Liao
TechNet Community Support

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