# Challenge a specific Verification Check.

**POST /v2/Services/{ServiceSid}/VerificationCheck**

challenge a specific Verification Check.


## Servers
- https://verify.twilio.com: https://verify.twilio.com ()


## Authentication methods
- Account sid auth token


## Parameters

### Path parameters
- **ServiceSid** (string)
  The SID of the verification [Service](https://www.twilio.com/docs/verify/api/service) to create the resource under.


### Body: application/x-www-form-urlencoded (object)

- **Code** (string)
  The 4-10 character string being verified.
- **To** (string)
  The phone number or [email](https://www.twilio.com/docs/verify/email) to verify. Either this parameter or the `verification_sid` must be specified. Phone numbers must be in [E.164 format](https://www.twilio.com/docs/glossary/what-e164).
- **VerificationSid** (string)
  A SID that uniquely identifies the Verification Check. Either this parameter or the `to` phone number/[email](https://www.twilio.com/docs/verify/email) must be specified.
- **Amount** (string)
  The amount of the associated PSD2 compliant transaction. Requires the PSD2 Service flag enabled.
- **Payee** (string)
  The payee of the associated PSD2 compliant transaction. Requires the PSD2 Service flag enabled.
- **SnaClientToken** (string)
  A sna client token received in sna url invocation response needs to be passed in Verification Check request and should match to get successful response.


## Responses
### 200
OK
#### Headers
- **Access-Control-Allow-Origin** (string)
  Specify the origin(s) allowed to access the resource
- **Access-Control-Allow-Methods** (string)
  Specify the HTTP methods allowed when accessing the resource
- **Access-Control-Allow-Headers** (string)
  Specify the headers allowed when accessing the resource
- **Access-Control-Allow-Credentials** (boolean)
  Indicates whether the browser should include credentials
- **Access-Control-Expose-Headers** (string)
  Headers exposed to the client

#### Body: application/json (object)
- **sid** (string | null)
  The unique string that we created to identify the VerificationCheck resource.
- **service_sid** (string | null)
  The SID of the [Service](https://www.twilio.com/docs/verify/api/service) the resource is associated with.
- **account_sid** (string | null)
  The SID of the [Account](https://www.twilio.com/docs/iam/api/account) that created the VerificationCheck resource.
- **to** (string | null)
  The phone number or [email](https://www.twilio.com/docs/verify/email) being verified. Phone numbers must be in [E.164 format](https://www.twilio.com/docs/glossary/what-e164).
- **channel** (string)
  The verification method to use. One of: [`email`](https://www.twilio.com/docs/verify/email), `sms`, `whatsapp`, `call`, or `sna`.
- **status** (string | null)
  The status of the verification. Can be: `pending`, `approved`, `canceled`, `max_attempts_reached`, `deleted`, `failed` or `expired`.
- **valid** (boolean | null)
  Use "status" instead. Legacy property indicating whether the verification was successful.
- **amount** (string | null)
  The amount of the associated PSD2 compliant transaction. Requires the PSD2 Service flag enabled.
- **payee** (string | null)
  The payee of the associated PSD2 compliant transaction. Requires the PSD2 Service flag enabled.
- **date_created** (string(date-time) | null)
  The [ISO 8601](https://en.wikipedia.org/wiki/ISO_8601) date and time in GMT when the Verification Check resource was created.
- **date_updated** (string(date-time) | null)
  The [ISO 8601](https://en.wikipedia.org/wiki/ISO_8601) date and time in GMT when the Verification Check resource was last updated.
- **sna_attempts_error_codes** (array | null)
  List of error codes as a result of attempting a verification using the `sna` channel. The error codes are chronologically ordered, from the first attempt to the latest attempt. This will be an empty list if no errors occured or `null` if the last channel used wasn't `sna`.

### 201
Created
#### Headers
- **Access-Control-Allow-Origin** (string)
  Specify the origin(s) allowed to access the resource
- **Access-Control-Allow-Methods** (string)
  Specify the HTTP methods allowed when accessing the resource
- **Access-Control-Allow-Headers** (string)
  Specify the headers allowed when accessing the resource
- **Access-Control-Allow-Credentials** (boolean)
  Indicates whether the browser should include credentials
- **Access-Control-Expose-Headers** (string)
  Headers exposed to the client

#### Body: application/json (object)
- **sid** (string | null)
  The unique string that we created to identify the VerificationCheck resource.
- **service_sid** (string | null)
  The SID of the [Service](https://www.twilio.com/docs/verify/api/service) the resource is associated with.
- **account_sid** (string | null)
  The SID of the [Account](https://www.twilio.com/docs/iam/api/account) that created the VerificationCheck resource.
- **to** (string | null)
  The phone number or [email](https://www.twilio.com/docs/verify/email) being verified. Phone numbers must be in [E.164 format](https://www.twilio.com/docs/glossary/what-e164).
- **channel** (string)
  The verification method to use. One of: [`email`](https://www.twilio.com/docs/verify/email), `sms`, `whatsapp`, `call`, or `sna`.
- **status** (string | null)
  The status of the verification. Can be: `pending`, `approved`, `canceled`, `max_attempts_reached`, `deleted`, `failed` or `expired`.
- **valid** (boolean | null)
  Use "status" instead. Legacy property indicating whether the verification was successful.
- **amount** (string | null)
  The amount of the associated PSD2 compliant transaction. Requires the PSD2 Service flag enabled.
- **payee** (string | null)
  The payee of the associated PSD2 compliant transaction. Requires the PSD2 Service flag enabled.
- **date_created** (string(date-time) | null)
  The [ISO 8601](https://en.wikipedia.org/wiki/ISO_8601) date and time in GMT when the Verification Check resource was created.
- **date_updated** (string(date-time) | null)
  The [ISO 8601](https://en.wikipedia.org/wiki/ISO_8601) date and time in GMT when the Verification Check resource was last updated.
- **sna_attempts_error_codes** (array | null)
  List of error codes as a result of attempting a verification using the `sna` channel. The error codes are chronologically ordered, from the first attempt to the latest attempt. This will be an empty list if no errors occured or `null` if the last channel used wasn't `sna`.


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