Power Automate failing to refresh Power BI Dataflow or Dataset. The backend request failed error 400

Good day

I am attempting to create an automation, for a client's tenant, whereby Power Automate first refreshes specific Power BI dataflows and then refreshes the dataset using these dataflows (All being stored in the Power BI Service).

I have done this with various clients and tenants with no issue in the past.
However, I am now getting an error code 400 stating that the backend request failed. A bad request.

I am using a microsoft profile and Power BI license that was created by the client's IT department.
All credentials are in working order.

Is there a way for Admins to revoke Power Automate / API access to a Power BI tenant?

If so, can someone please point out what specific setting needs to be toggled on/off.