HR-FI Integration-OKB9 for Cost center determination & Maintenance of Cost center in Infotype 27-Cost Distribution

Hi Experts,

We were having a issue with posting the salary to 2 different company code based cost centers.

The cost centers are working fine if attached individually with each comp code.

When i maintained 0027 & the FI consultant maintained them in OKB9 then the document is getting generated correctly.

Though i am not sure about the correctness of the process as nowhere i have come across this solution.

All the links have suggested to maintain Posting Variant & IT0027-Cost Distribution from HR side.

Can any body please suggest about the correctness.