# Update Customer

```
PUT 
/customers/:id
```

Updates a customer. Only the fields you send are changed.

**Changing the default payment method**:

Set `defaultTokenId` to the ID of a payment method this customer already owns. It must be one that can be reused for future payments — a payment method saved for a single use is rejected.

MONEI only ever fills a default that is empty, so a value you set here is kept. Deleting that payment method clears the field, and the next reusable one the customer saves becomes the new default.

**What updating does not do**:

Updating a customer never changes a payment or a subscription that already exists. Their copies of the customer's details were taken when they were created, so a corrected email here does not rewrite last month's receipt.

## Request[​](#request "Enlace directo al request")

## Responses[​](#responses "Enlace directo al Responses")

* 200
* 400
* 401
* 404
* 422
* 500
* 503

A customer object

The request is incorrect or could not be processed

Unauthorized error. Please check your auth credentials

The specified resource was not found

The request was well-formed but could not be processed due to semantic errors

Unexpected server error

The service is temporarily unavailable