Site issue to access SAP ME PAPI in SAP MII

Hello,

We are having multiple site in SAP ME. When I try to fetch the SAP ME PAPI with site US10 in SAP MII, its working. When I try to fetch it with site

US20, it doesn't give any output. Also if I explicitly mention the site name US20 in Site tag of SAP ME interface action block, transaction gives an exception.

Could you please help what is the issue or am I missing any configuration for site US20.

We are working on SAP ME/MII 15.1 version.

Thanks in Advance!

Regards,

Kshitiz