Impossible to create a SAC Story from a Data Warehouse Cloud

I am the System Administrator of the 2 tenants:

• SAP Datawarehouse Cloud (DWC)

• SAP Analytics Cloud (SAC)

However, when I want to create a Story using SAP Data Warehouse Cloud (DWC) tenant as Data source, I failed to link to any Space and corresponding Analytical Data Sets.

Please give me a guideline