---
page_type: error
code: 40133
message: "40133: TaskRouter->Dequeue"
level: ERROR
product: TaskRouter
---

## Error - 40133

### Call API Error - Dequeue Instruction

#### Possible Causes

- Un-routable address provided for "to" field.
- Invalid caller-id passed to "from" field.
- Internal Twilio API error.

#### Possible Solutions

- Make certain "to" contains a routable phone number, client URI or SIP URI.
- Make certain "to" is to a country you have permissions set to call.
- Make certain "from" contains an acceptable caller ID for the chosen "to" address.

#### Example

```
{
	"instruction": "dequeue",
	"to": "client:alice",
	"from": "18001234567",
	"post_work_activity_sid": "WA0123456789abcdef0123456789abcdef"
}
```