The data ingestion consists typically of the following steps:
Please arrange the execution of API calls according to the schema. You will need to use the data received in the previous steps, such as IDs.
Create order items is an optional step. You might need them to enable the Returns portal and provide your customers with a better experience.
Implement the "Create label" flow if you want to generate carrier labels from Seven Senders.
Note: when you request a label, the corresponding shipment gets created automatically. You receive the shipment ID in response to the "Create label" request.