Contact person creation

Hi all,

My requirement is to create a contact person for a given parnter. I found the FM BBP_CREATE_CONTACT_PERSON,but not able to use it correctly. How to run this FM succesfully both in SUS and SRM systems? I am facing many issues with address and authorizations.I thought of enhancing the BAPI 'BAPI_IDOC_INPUTP' to create contact persons and for that i thought of using the FM BBP_CREATE_CONTACT_PERSON. Please suggest me the solution.

Thanks in Advance,

Deepthi.