I use postman to generate curl command, which contains "--location"

curl --location --request POST 'http://localhost:5001/api/SCMBaseService/GetUdfButtons' \ --header 'Content-Type: application/json' \ --data-raw '{ "v": { "SysId": "OMS", "ModelName": "Purchase" }, "lg": "zh_cn", "tk": "09ff6d32-bfa0-45dd-ae75-51d136f48c04" }'