Shiptheory has 2 seperate Royal Mail integrations.

The first uses Royal Mail's OBA Shipping API.   If you are using this one, this article does not apply to you.

For those using our second Royal Mail integration (Shown as Royal Mail Netdespatch).  There are a couple of things you need to do at the end of each day:

At the end of each day, you need to Generate New Manifest via the Royal Mail portal  to submit your shipments for Domestic. For International, you need to login here: Royal Mail portal (International)

Note: your Domestic and International shipments need to be handled as separate manifests via separate logins.

If you're not sure of your login details, contact us.