# UpdateCustomerInput

Input · GraphQL API

Top-level field for updating a customer.

## Fields

- `clientMutationId` (`String`): An identifier used to reconcile requests and responses. 255 characters maximum.
- `customerId` (`ID!`) — required: ID of the customer to be updated.
- `customer` (`CustomerInput`): Input fields for the updates to be made on the customer.

## Used by

- [updateCustomer](/braintree/graphql/reference/mutations/update-customer) — Mutation; input

## GraphQL definition

```graphql
input UpdateCustomerInput {
  clientMutationId: String
  customerId: ID!
  customer: CustomerInput
}
```

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[View the complete GraphQL schema on GitHub](https://raw.githubusercontent.com/braintree/graphql-api/refs/heads/master/schema.graphql)