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Change the Event Timings

You can change the default timings by supplying custom values for pin_expiry and/or next_event_wait in the initial request:

  • pin_expiry:
    • The time after which the code expires
    • Must be an integer value between 60 and 3600 seconds
    • The default expiry differs between workflows but will be 300 seconds in most cases
  • next_event_wait:
    • The time after which Nexmo triggers the next verification attempt
    • The default timing differs for each workflow

If you specify values for both pin_expiry and next_event_wait, the value of pin_expiry must be an exact multiple of next_event_wait.

Examples

The table below shows some example values and the effects when used with the default workflow (SMS -> TTS -> TTS):

pin_expiry next_event_wait Effect
360 seconds 120 seconds All three attempts use the same verification code
240 seconds 120 seconds The first and second attempts use the same code and the Verify API generates a new code for the third attempt
120 seconds (or 90 or 200 seconds) 120 seconds The Verify API generates a new code for each attempt