SAP PO and SAP SLD

Hi All,

I was preparing for SAP PO 7.5 (Only JAVA) implementation and going through documentations to understand SAP's evolution path from SAP PI to SAP PO.

I had one query about SAP PO and SAP SLD.

During installation of SAP PO, there is no option for installing on "Local SLD". Available options are 1) Register in existing SLD or 2) No SLD.

In Past, for PI (ABAP + JAVA) SLD was must component and was generally preferred to have local SLD for PI, but as explained above, PO installation does not even give option for local SLD.

Great if someone can explain :
How is SLD positioned in SAP PO landscape (in comparison to SAP PI) ?

What is Best practice for SAP SLD setup for SAP PO 7.5 ?

Any pointers will be helpful.

Thanks.