post
https://api.intersoftsapient.net/v4/shippingAccounts/rm//linkLocations
Link one or more shipping locations with a Royal Mail shipping account.
Ensure to have required carrier details ready: Royal Mail Posting Location number, OBA access codes and receiving hub, so that you can link it successfully.
The shipping location(s) have been linked to the account successfully.
Unauthorized
Forbidden
The shipping account was not found.
Internal Server Error