Click Create an app and fill the App name with ASL Portal
Step 2. Setup Configuration and Permission
Navigate to Configuration and click Admin API integration > Configure
Select the following API access scopes
write_assigned_fulfillment_orders, read_assigned_fulfillment_orders, write_merchant_managed_fulfillment_orders, read_merchant_managed_fulfillment_orders,
write_third_party_fulfillment_orders, read_third_party_fulfillment_orders, write_fulfillments,read_fulfillments, write_inventory, read_inventory, write_orders, read_orders, write_products, read_products with latest webhook version
Click Save
Step 3. Install App
Go back to API credentials and click Install app to generate the Access token