Shipping Cost problem, outbound_label_charges returns null

It seems we can not get shipment cost of the order from API. Just to be sure is it true?
When I hit /orders endpoint the outbound_label_charges returns null.
{
“allocations”: [
{
“shipment”: {
“outbound_label_charges”: {
“unit”: “null”,
“value”: null,
}
}
}
]
}

Hey @boby,
These fields are only populated for orders that were shipped using Buy Shipping.

Thank you for this answer @fullsam