`invoice_not_payable`

HTTP 409conflict

Only an unpaid card invoice whose charge was refused is paid here.

Handling it

Fix the request and send it again. message says what is wrong, and param names the parameter where there is one. Keep the request_id: it lets Parasend find the request.

The error, as the API returns it

{
  "error": {
    "type": "conflict",
    "code": "invoice_not_payable",
    "message": "Only an unpaid card invoice whose charge was refused is paid here.",
    "param": null,
    "request_id": "req_5e69684dc3de68bf8651a712"
  }
}