SHIPPING_ADD
action.curl --location -g --request POST '{{BASE_URL}}/admin/returns//shipping-method' \
--header 'Content-Type: application/json' \
--data-raw '{
"shipping_option_id": "string",
"custom_amount": 0,
"description": "string",
"internal_note": "string",
"metadata": {}
}'
+
it will be added to the default fields, using -
will remove it from the default fields. without prefix it will replace the entire default fields.