SAP transport from SAP NW 7.3 into SAP S/4HANA not possible?

Hi all

M-y case is the following scenario:

I have an SAP ERP 6.0/ EhP6 (A) and an SAP S/4HANA (B) installtion.

Now I would a development package export from A)and import to B) with an SAP transport.

After the export in A): I transfer cofiles and data to B). But It was not possible with STMS to add the ERP SAP transport in the import queue in SAP S/4HANA system.

I created a new cofiles - now is it possible to add. But I get now a import message "the transport is missing" in the import log from SAP S/4HANA.

Thanks for help

Richi