This operation is not supported by directory buckets.
See https://www.paws-r-sdk.com/docs/s3control_get_multi_region_access_point_routes/ for full documentation.
s3control_get_multi_region_access_point_routes(AccountId, Mrap)
[required] The Amazon Web Services account ID for the owner of the Multi-Region Access Point.
[required] The Multi-Region Access Point ARN.