You can distribute business partner data in different ways.
Here you have the following options:
Replication by means of the SAP NetWeaver Process Integration (XI)
The integration scenario BusinessPartnerReplication with the relevant message interfaces , the Message type ABABusinessPartner , interface mappings and the XSLT mapping ABABusinessPartner700ToABABusinessPartner700 are available for this.
Distribution via the ALE/IDoc interfaces
The following interfaces for business partner and relationship data are provided for this purpose:
Data is distributed in both cases with the help of the complex structures BUS_EI_EXTERN (business partner data) and BURS_EI_EXTERN (relationship data). For more information on the structure BUS_EI_EXTERN, see the relevant system documentation.
There may be other types of distribution technology available, depending on your application.