Unable to Add Standard ODATA Service on NetWeaver Gateway System

Hello Everyone,

We are configuring SAP Fiori Factsheet application 'Service Entry Sheet'. See this link for details.

But when I am trying to add service 'CB_SERVICE_ENTRY_SHEET_SRV' on the gateway system gateway is throwing error 'assign model first' see below screenshot:

All required components are there in the landscape and search connectors are active.

I will appreciate any help in solving in this.

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Regards,

Rauf