# Update a specific Verification Service

**POST /v2/Services/{Sid}**

Update a specific Verification Service.
TODO: Resource-level docs

## Servers



## Parameters

### Path parameters
- **Sid** (string)
  The Twilio-provided string that uniquely identifies the Service resource to update.


### Body:  (object)

- **CodeLength** (integer)
  The length of the verification code to generate. Must be an integer value between 4 and 10, inclusive.
- **CustomCodeEnabled** (boolean)
  Whether to allow sending verifications with a custom code instead of a randomly generated one. Not available for all customers.
- **DefaultTemplateSid** (string)
  The default message [template](https://www.twilio.com/docs/verify/api/templates). Will be used for all SMS verifications unless explicitly overriden. SMS channel only.
- **DoNotShareWarningEnabled** (boolean)
  Whether to add a privacy warning at the end of an SMS. **Disabled by default and applies only for SMS.**
- **DtmfInputRequired** (boolean)
  Whether to ask the user to press a number before delivering the verify code in a phone call.
- **FriendlyName** (string)
  A descriptive string that you create to describe the verification service. It can be up to 30 characters long. **This value should not contain PII.**
- **LookupEnabled** (boolean)
  Whether to perform a lookup with each verification started and return info about the phone number.
- **Psd2Enabled** (boolean)
  Whether to pass PSD2 transaction parameters when starting a verification.
- **Push.ApnCredentialSid** (string)
  Optional configuration for the Push factors. Set the APN Credential for this service. This will allow to send push notifications to iOS devices. See [Credential Resource](https://www.twilio.com/docs/notify/api/credential-resource)
- **Push.FcmCredentialSid** (string)
  Optional configuration for the Push factors. Set the FCM Credential for this service. This will allow to send push notifications to Android devices. See [Credential Resource](https://www.twilio.com/docs/notify/api/credential-resource)
- **Push.IncludeDate** (boolean)
  Optional configuration for the Push factors. If true, include the date in the Challenge's response. Otherwise, the date is omitted from the response. See [Challenge](https://www.twilio.com/docs/verify/api/challenge) resource’s details parameter for more info. Default: false. **Deprecated** do not use this parameter.
- **SkipSmsToLandlines** (boolean)
  Whether to skip sending SMS verifications to landlines. Requires `lookup_enabled`.
- **Totp.CodeLength** (integer)
  Optional configuration for the TOTP factors. Number of digits for generated TOTP codes. Must be between 3 and 8, inclusive. Defaults to 6
- **Totp.Issuer** (string)
  Optional configuration for the TOTP factors. Set TOTP Issuer for this service. This will allow to configure the issuer of the TOTP URI.
- **Totp.Skew** (integer)
  Optional configuration for the TOTP factors. The number of time-steps, past and future, that are valid for validation of TOTP codes. Must be between 0 and 2, inclusive. Defaults to 1
- **Totp.TimeStep** (integer)
  Optional configuration for the TOTP factors. Defines how often, in seconds, are TOTP codes generated. i.e, a new TOTP code is generated every time_step seconds. Must be between 20 and 60 seconds, inclusive. Defaults to 30 seconds
- **TtsName** (string)
  The name of an alternative text-to-speech service to use in phone calls. Applies only to TTS languages.


## Responses
### 200
OK

#### Body:  (object)
- **account_sid** (string | null)
  The SID of the Account that created the resource
- **code_length** (integer | null)
  The length of the verification code
- **custom_code_enabled** (boolean | null)
  Whether to allow sending verifications with a custom code.
- **date_created** (string(date-time) | null)
  The RFC 2822 date and time in GMT when the resource was created
- **date_updated** (string(date-time) | null)
  The RFC 2822 date and time in GMT when the resource was last updated
- **default_template_sid** (string | null)

- **do_not_share_warning_enabled** (boolean | null)
  Whether to add a security warning at the end of an SMS.
- **dtmf_input_required** (boolean | null)
  Whether to ask the user to press a number before delivering the verify code in a phone call
- **friendly_name** (string | null)
  The string that you assigned to describe the verification service
- **links** (object(uri-map) | null)
  The URLs of related resources
- **lookup_enabled** (boolean | null)
  Whether to perform a lookup with each verification
- **psd2_enabled** (boolean | null)
  Whether to pass PSD2 transaction parameters when starting a verification
- **push** ()
  The service level configuration of factor push type.
- **sid** (string | null)
  The unique string that identifies the resource
- **skip_sms_to_landlines** (boolean | null)
  Whether to skip sending SMS verifications to landlines
- **totp** ()
  The service level configuration of factor TOTP type.
- **tts_name** (string | null)
  The name of an alternative text-to-speech service to use in phone calls
- **url** (string(uri) | null)
  The absolute URL of the resource


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