I am trying to create anemoi dataset using,

anemoi-datasets create ./aifs_mars.yaml mysubset_t_1000.zarr --overwrite

My yaml file is the same as,
https://github.com/ecmwf/anemoi-configs/blob/main/configs/aifs/aifs-single-mse-1.1/dataset/aifs-ea-an-oper-0001-mars-o96-1979-2024-6h-v1-aifs-single-v1.yaml

except that I want only temperature at 1000 mb.

I installed both the CDS API and ECMWF API. I have .ecmwfapirc and .cdsapirc in my home directory with the correct url and keys. And yet I get the error,

ecmwfapi.api.APIException: "ecmwf.API error 1: User 'vikram.khade@canada.ca' has no access to services/mars"

Is it not enough to have the API keys ? What more do I need to do ? Thanks.