> ## Knowledge Base Index > Fetch the complete knowledge base index at: https://help.nimbata.com/sitemap.xml > Use this file to discover available pages before exploring further. > Pure-Markdown content can be obtained by appending a '.md' suffix to the content URLs listed in the sitemap (without the trailing slash). # Destination number verification: why it's required and how to complete it * A destination number is the phone that actually rings when someone calls your Nimbata tracking number, typically your main business line, mobile, or call center number. * Before Nimbata can forward calls to it, the number must be verified. * Verification is a one-time step per destination number. * Once verified, it stays verified unless you remove it from your account. ### Why verification is required Telecom regulations in most countries require carriers to confirm that a forwarding destination is a real, reachable phone number before it can receive call traffic. This protects you and your callers from misdirected calls and ensures Nimbata complies with local number regulations. ### How to verify a destination number Nimbata verifies destination numbers in one of two ways depending on your country and number type. # Option A: Automated verification call This is the most common method. ### Step 1. Add the destination number. * Go to [Tracking > Destinations](https://app.nimbata.com/tracking/destinations). * Click **+ Add**. * Select the flag of the country the number belongs to. * Enter the phone number and give it a name. * Click **Add destination**. ![](https://storage.crisp.chat/users/helpdesk/website/-/2/f/4/5/2f459a49cf382400/image1pb477p_1gmprmr.png) ### Step 2. Answer the verification call. * Click **Verify**. Nimbata will place an automated call to that number within a few seconds. * Answer the call and follow the voice prompt, typically pressing a key to confirm. * Once confirmed, the number's status updates to **Verified** and you can use it in call flows immediately. | Make sure someone is available to answer the verification call when you submit it. Missed calls are the most common reason verification stalls. # Option B: Manual verification by the support team For some countries, toll-free numbers, VoIP lines, and certain number types, automated calling is not available. In those cases, the Nimbata team verifies the number manually. ### Step 1. Submit a support request. * Click the **?** icon in the top right of your Nimbata dashboard. * Select **Submit a request**. * Include the destination number with country code and a note that you need it verified. The team typically completes manual verifications within one business day. ### Understanding verification statuses | Status | What it means | | ---- | | **Pending** | Verification is in progress. This is normal — it can take a few minutes for an automated call or up to 24 hours for a manual review. | | **Verified** | The number is active and ready to receive forwarded calls. | | **Failed** | The verification call was not answered or was rejected. See below for how to retry. | | **Unverified** | The number has been added but verification has not been started yet. | # Troubleshooting: what to do if verification fails or is stuck ### The verification call wasn't answered The automated call goes out within seconds of submitting. If no one was available to answer, the attempt fails silently. * Go to [Tracking > Destinations](https://app.nimbata.com/tracking/destinations). * Find the number. * Click **Re-verify** to trigger a new call, or remove and re-add the number. ### The number format is wrong Nimbata requires numbers in the correct national format for the destination country. Common mistakes: * Entering a US number without the country code — use `+1 XXX XXX XXXX`, not `XXX-XXX-XXXX`. * Including spaces, dashes, or parentheses — use digits only after the country code. * Selecting the wrong country flag before entering the number. Remove the number, correct the format, and re-add it. ### The number belongs to another account If you see a "destination already exists" error, the number is already registered under a different Nimbata account, possibly a previous trial or a colleague's account. Contact support with the number and they can resolve the conflict. ### A red banner flashes and disappears with no error message This is a backend validation failure, usually caused by a formatting issue or a number that is blocked at the carrier level. * Click the **?** icon and select **Submit a request**. * Include the destination number with country code, the country it is in, and a screenshot of the error if possible. ### Verification is showing Pending for more than 24 hours * Automated verifications should resolve in under five minutes. * If it has been longer than 24 hours, the verification call likely failed silently. * Contact support to reset and re-trigger it. ### The number is a toll-free, VoIP, or non-geographic number These number types often cannot receive automated verification calls. Submit a support request and mention that it is a toll-free or VoIP line so the team can apply the correct manual process. ### After verification: what's next? Once your destination number is verified, assign it to a call flow: * Go to [Tracking > Call Flows](https://app.nimbata.com/tracking/call-flows) and open or create a call flow. * Under the routing step, select your verified destination number. * Save the call flow and assign a tracking number to it. --- 🎉 Your setup is complete. Calls to your tracking number will now forward to your verified destination. Detailed guide: [**How to add a destination number**](https://help.nimbata.com/en/article/how-to-add-a-destination-number-hdksuz/) Detailed guide: [**Tracking numbers vs. destination numbers: what's the difference**](https://help.nimbata.com/en/article/tracking-numbers-vs-destination-numbers-whats-the-difference-1sefiss/) Detailed guide: [**How to set up call flows**](https://help.nimbata.com/en/article/how-to-set-up-call-flows-1731pv5/) Detailed guide: [**Why can't I assign a call flow to a destination number in a different country?**](https://help.nimbata.com/en/article/why-cant-i-assign-a-call-flow-to-a-destination-number-in-a-different-country-1vv7b7a/)