> For the complete documentation index, see [llms.txt](https://docs.truecaller.com/truecaller-sdk/llms.txt). Markdown versions of documentation pages are available by appending `.md` to page URLs; this page is available as [Markdown](https://docs.truecaller.com/truecaller-sdk/android/oauth-sdk-3.0.0/integration-steps/non-truecaller-user-verification/completing-verification.md).

# Completing Verification

Once you receive a callback in your VerificationCallback instance with the callbackType `TYPE_MISSED_CALL_RECEIVED`, you can complete the verification process by calling the following method from within your activity :

Copy

```
TrueProfile profile = new TrueProfile.Builder(firstName, lastName).build();
TcSdk.getInstance().verifyMissedCall(profile, verificationCallback)
```

You need to create a TrueProfile instance by passing the user's first and last name as defined above.

Please note that the first name and last name values to be passed in the above method call need to follow below mentioned rules :

* The strings need to contains at least 1 alphabet, and cannot be completely comprised of numbers or special characters.
* String length should be less than 128 characters.
* First name is a mandatory field, last name can be empty ( but non nullable ).


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