sending cost centers from one system to other system( different landscape)

Hi SAP gurus,

Can some one please let me know how to send the cost centers created in one system to other ssytem,

my requirement is sending cost centers from one sytem to other system:

1. when a new cost center created

2. when any changes happend to existing Cost centers.

The two system are in different landscapes.

please let me know what are configs we need to do for working this functionality.

Thanks in Advance,

--Madhav