Please get in touch with Support if you are looking to integrate Royal Mail with Nventree, via API.
If you are looking to integrate your Royal Mail account with Nventree, first you must reach out to us and we will supply you with a Royal Mail Onboarding Request Form, which you will need to fill out and send back to us, so we can forward it to Royal Mail to start the onboarding process and you will gain access to Royal Mail Pro Shipping.
Once live with ProShipping you will have the option of setting up your API credentials, which Nventree can then use to connect to Royal Mail.
To connect Royal Mail with Nventree, supply the:
Royal Mail Posting Location number
Description of goods ( for international purposes)