0CO_OM_CCA_20 and 0CO_OM_CCA_40

Hi everyone,

i am making Report on Cost Centre Allocation. and i would like to know how can we join these 2 Datasource

i have read throught 12 Articles on SCN about these Datasource but there is no Description about joining of 2 data in the Datasources so i would like to ask for help:

0CO_OM_CCA_20:contain plan and actual totals cost

0CO_OM_CCA_40: contain actual line time level cost

i have loaded data from 0CO_OM_CCA_20 to InfoCube 0CCA_C20 and 0CO_OM_CCA_40 to 0CCA_R40. i want to create an InfoProvider based on 2 Infocubes

But the 0CCA_C20 has no Company Code and 0CCA_R40 has it. So i don't know how can we Join 2 InfoCubes?

Thanks