How to obtain tokens in Shipout?
How do I get my API key in Shipout?
Here's the guide in obtaining the API Key from ShipOut
2. On the upper-right hand corner, click on the arrow down next to your profile and go to 'Account'
3. Find API setting, click on [Generate key]

Frequently Asked Questions:
How to deal with the error Access token expired when placing an order in Shipout?
Answer: This generally means that the customer's token authentication has expired, and you need to obtain a new token and update it to ERP.