The API currently returns an empty response. To get a complete response, we need to run the following query to retrieve the siteId covered by the API:
SELECT srv.site_id
FROM SRD_ROUTER_VIEW srv
INNER JOIN ELEMENTADDITIONALINFO edi
ON srv.id = edi.ElementId
WHERE attribute = 'NE_Network_Position'
AND value = 'PE';

Please provide a sample in Omantel platforms 179 and 84 and to be demoed in SRD UI

I got below list of site IDs, but the output is still empty

SIT IDs :
D0100
M0001
48
D0001
Q0415
K0001
M0010
M0028
Default Site
TB-10K-ADSL
TRG-PE-CORE-NE80E-1
S0001
M0011

REQUEST / RESPONSE :
<soapenv:Envelope xmlns:soapenv=http://schemas.xmlsoap.org/soap/envelope/ xmlns:ser=http://server.internal.api.srd.nep.mobinets.com/>
<soapenv:Header/>
<soapenv:Body>
<ser:getIPCoreRoute>
<!-Zero or more repetitions:->
<siteIds>TRG-PE-CORE-NE80E</siteIds>
<!-Optional:->
<pathsNum>50</pathsNum>
</ser:getIPCoreRoute>
</soapenv:Body>
</soapenv:Envelope>

<soap:Envelope xmlns:soap=http://schemas.xmlsoap.org/soap/envelope/>
<soap:Body>
<ns2:getIPCoreRouteResponse xmlns:ns2=http://server.internal.api.srd.nep.mobinets.com//>
</soap:Body>
</soap:Envelope>

The siteIds parameter must be Site IDs of PE routers, visible in SRD UI under Inventory → Router (Site ID column). The test environment has no PE routers configured (NE_Network_Position = PE not set on any router in NEP inventory), which is why the API returns empty. Valid testing requires at least 2 PE routers configured in NEP inventory.

Previous list is got from the sql code shared by Ayed, which include "value = 'PE" :

SELECT srv.site_id
FROM SRD_ROUTER_VIEW srv
INNER JOIN ELEMENTADDITIONALINFO edi
ON srv.id = edi.ElementId
WHERE attribute = 'NE_Network_Position'
AND value = 'PE';

find attached sample request from 84 server :
forget the query you must copy two site ids from the report in SRD UI, link of report : http://10.164.144.84:9189/NEP_SRD_UI/reporting/router

The output is fine now, but there is a performance issue now : 6s on OLD, versu 11s on NEW. See screenshots

fixed available with release 53