Unable to send attachment using Postman using multipart/form-data

We are trying to send an attachment using multipart/form-data in postman and get this error:

{
"error": {
"message": "Failed to create the attachment. File part might be missing in the request.",
"detail": null
},
"status": "failure"
}

The same is working from ServiceNow REST API explorer.

I have seen similar post since 2015 but no correct answers till now 🙂