AS2 to ECC(SFTP) for PDF file transfer(No ESR)

Hi Team,

Currently i am working on Interface, flow is:  External system(AS2) -->XI-->ECC(SFTP).

PI Version: 7.0 and AS2 adapter is used of Seeburger.

External system is sending the PDF file with Delivery no as filename (Ex 123.pdf and 456.pdf), same file need to place in ECC application directory. PI will just manage the file transfer(no ESR).

Can anyone please help me, how to place the same file and name (Source filename) in target directory.

Thanks,

MR Reddy