Once you have your User OCID, Tenancy OCID, Compartment OCID, and API Private Key File, please go to Aviatrix Controller > Accounts > Access Accounts > New Account and fill the required information. Please note that you should upload the Private Key file in the Aviatrix controller (which is different than the one you put in the OCI console). You can find that key in the folder where you generated the key in the above steps (.oci folder in above example)