HTTPS - use of certificate - SLD issue

Dear Gurus

I encounter a problem when configuring the root certificate for SAP Netweaver 7.0 Java (used for a GRC AC application).

Some characteristics:

- certificate type = X.509 generated by our own certificate authority and imported in the view SERVICE_SSL

- but our CA server is NOT registered in the default list of key storage (TRUSTEDCAs)

- access to the server via a web browser is OK (https://xxxxx, with port 50001)

- the SLD is a local SLD

- trigger SLD data transfer is NOT successful (error message: unable to open SSL connection to host xxxxxx peer certificate rejected by chainverifier)

- as additional information, importing the default test SAP certificate (from SAP marketplace) is successful.

Do I need to install the SAP Java Cryptographic Library? Or anything else?

Any other idea and comments are welcome!

Thanks in advance for your support

Best regards

RONAN