Create an app and obtain the API Access Token
Settings - Apps and sales channels - Develop apps
Click Create an app
Enter an App name and then click Create app
Click Configure Admin API scopes to grant access permission, make sure following permissions are included.
read_fulfillments, write_fulfillments,
write_inventory, read_inventory,
read_locations,
write_merchant_managed_fulfillment_orders, read_merchant_managed_fulfillment_orders, read_customers,
read_assigned_fulfillment_orders, write_assigned_fulfillment_orders,
read_orders, read_order_edits,
read_products,
write_shipping, read_shipping,
write_third_party_fulfillment_orders, read_third_party_fulfillment_orders,
write_custom_fulfillment_services, read_custom_fulfillment_services
Then Navigate to API credentials to obtain the API access token
Paste access token to Shopify store setting in custom setting
