Semantic models used with Plan must be hosted on supported capacities, such as
Power BI Premium capacities (P1, P2, and higher)
Microsoft Fabric capacities (F SKUs)
Plan scenarios that rely on XMLA endpoints and embed tokens require supported Microsoft Fabric capacities (F SKUs) or Power BI Premium capacities (P1–P5). Power BI Pro and Power BI Premium Per User (PPU) aren't supported for these scenarios. Some lower-capacity SKUs can also have XMLA and memory limitations that prevent supported usage.
In the Power BI Admin portal, under Capacity settings, ensure that the XMLA Endpoint setting is configured as Read Only or Read Write.