OTBI report gives an error when add Workforce Management - Person Real time subject

Dear ,

I have an OTBI report which works fine on subject Workforce Management - Worker assignment Real time

but i need two more column which is in Workforce Management - Person Real time subject when i add this subject report gives an error  

(None of the fact tables are compatible with the query request Fact - Person.Person Extra Information_PER_PERSON_EIT_EFF_Tribe__and__Squad__Details_squad)

please guide me how to resolve this.

Thanks