Receiving Attachment thru RFC

Hi Experts,

I am doing a scenario for SOAP to RFC.

i am receiving the file in an attachment via SOAP protocol.

i want to upload that attachment into SAP or into Local System thru RFC.

Can somebody let me know the RFC for receiving the attachment in the Std SAP or send me the customized RFC for such a scenario.

Please let me know as early as possible, it is very urgent