APO DP CVC's and 2 Different Cubes

Hi experts,

I have a following question:

For demand planning process we are using 2 cubes: 1. History Data 2. Prices Data

First cube has following chars: Material, Plant, Customer, Warehouse.

Second cube has only Material and Plant as chars.

MPOS in DP includes full set of chars from first cube. CVC's are generated also based on first cube.

All Data from History Cube is visible in Demand Planning and absolutely correct.

Problem is that data from Prices cube is not available.

So for instance for first cube I have following cvc: mat1, 2000, cust1, warehouse1 - and all data is ok.

For second cube I have a combination like a subset of first one - mat1, 2000 and those data is not visible in DP even when I select exact combination in Interactive planning (mat1, 2000)

What is the problem? Should we have an equal set of chars in booth cubes? Or..??

Thanks a lot in advance for your suggestions!

Thanks, Andrey.