"Failed to Load Metadata" Error in Create KPI --> Entity Set

Hi All,

In the FIORI Launchpad Designer (KPI Modeler Screen), when trying to create a new KPI Design, as shown below,

Getting error: "Failed to Load Metadata" when the Entity Set is being assigned as shown below.

1) All the necessary Roles are assigned to this FIORI user such as : SAP_BR_ANALYTICS_SPECIALIST, SAP_BR_PURCHASER and SAP_BR_BUYER

2) The CDS view in the background is a standard CDS view: C_OVERDUEPO and OData Service /sap/opu/odata/sap/C_OVERDUEPO_CDS is also published.

Kindly Suggest.

Thanks,

AK