Multiple parameters for the same field in Odata Gateway

Hello,

I am working with one service Gateway(Odata) and other service in Hana. And I need to get 2.000 ID with SapUI5 from Hana and send it to the service of Gateway. The services in Gateway has to return around 10 entity per ID from Hana.

I do not want to do 2.000 call to the Gateway. Which is the best way to do it. Any Idea?, I think the pagination is not the best way because the table in Sap has also other different IDs. Can we call in the get_entityset of the gateway to call a Hana service and retunr the 20.000 entities?

Thank you very much.

Best