rule_type is rules, the attributes of the promotion's type are retrieved.rule_type is target-rules, the target rules' attributes of the application method's type are retrieved.rule_type is buy-rules, the buy rules' attributes of the application method's type are retrieved.curl '{backend_url}/admin/promotions/rule-attribute-options/{rule_type}' \
-H 'Authorization: Bearer {access_token}'{
"attributes": [
{
"id": "customer_group",
"value": "customer.groups.id",
"label": "Customer Group",
"operators": [
{
"id": "in",
"value": "in",
"label": "In"
}
]
}
]
}