Errors / invalid_topup_amount

Invalid top-up amount

HTTP 422invalid_requestinvalid_topup_amount

The amount is below the minimum or above the maximum for a single payment.

What to do

Send an amount in whole pounds between the bounds named in the message.

What it looks like

{
  "error": {
    "type": "invalid_request",
    "code": "invalid_topup_amount",
    "message": "…",
    "doc_url": "https://docs.textmast.com/errors/invalid_topup_amount",
    "request_id": "req_01j8xk2p7n4qc3m9v0wz5bt6ay"
  }
}

Quote the request_id if you get in touch. It is on every response, including this one, and it turns a support email into a single log query rather than an archaeology exercise.