How can I recreate a custom object after delete?

@RMones could you send me the link for this API doc? I tried but got an error not sure what I did wrong

{

“status”: “error”,

“message”: “Unable to infer object type from: p8013920_device”,

“correlationId”: “a6b82746-f3a9-4167-b0cf-8d3c7de80e9c”

}