Service Desk - only ABAP systems are displayed - no JAVA system

Dear SAP colleagues,

I have implemented the Service Desk in Solution Manager.

I can create OSS message from any ABAP or ABAP+JAVA systems (Help, Create Support Message, ...).

For JAVA standalone SAP systems, I have to login directly to my Solman System :

1. SOLMAN_WORKCENTER

2. Incident Management

3. New Message

4. Then, I get the "Product Systems" in which I can choose the systems for which I want to create a message.

But in this match code list, I only have ABAP, ABAP+JAVA SAP systems.

I do not have any JAVA systems.

For ABAP, ABAP+JAVA systems, I have created RFC SM_SIDCLNT100_READ.

Question :

What do I have to create - also RFC - to have SAP JAVA systems displayed in my list (Product System) ?

Thanks in advance for your input.

Best regards

Pascal