LCRSAPRFC and SAPSLDAPI query

Hi PI/PO Gurus,

I was looking on the differences in Proxy configuration in PI 7.1 and PO. What I saw in LCRSAPRFC and SAPSLDAPI is both are having same parameters for connection but I was unable to see that how PI is diffrentiating that how LCRSAPRFC will get ESR details and how SAPSLDAPI get SLD details.

On further analysis, I found that both RFCs are calling the ABAP function module which extracts the data from LCRSAPRFC and SAPSLDAPI but where I can see that how that function module is called by PI. In PO, we are using SAP_ESR_PROXY and in this RFC we are giving ESR url which will get the ESR details for sproxy but this URL we cant see in PI 7.1.

Please correct me if I am proceeding in wrong direction. Your valuable inputs will be helpful for my knowledge.

Regards,

Shankul