You can create required objects in the Enterprise Services Repository (ESR) of a Java AS. These objects can then imported into the process in SAP NetWeaver Developer Studio (NWDS).
The easiest way to import interfaces from the ESR is to choose the Import function of service interfaces in the product. The import starts with a selection from which source an object shall be imported. Here the ESR can be chosen. A prerequisite is, that the locally installed NWDS is linked to a ESR of an AS Java. If the assignment works, the ESR is displayed, and the required object can be chosen.