# `too_long`: more digits than any number in that plan

The number has more digits than the longest subscriber number of its plan, often two numbers run together or an extension typed inline.

- Appears in: `reason`
- Billing: Free. Invalid numbers never cost a credit.

E.164 caps numbers at 15 digits and each plan is shorter still. Extensions written as "ext 123" or "x123" are parsed out and returned in the extension field; digits appended without such a marker make the number too long.

**What to do.** Split off an extension with "ext", or check whether two numbers were pasted as one.

```json
{
    "valid": false,
    "reason": "too_long",
    "e164": null,
    "country": null,
    "risk_score": null
}
```

Reference: https://spaw.co/docs/reasons/too_long