> For the complete documentation index, see [llms.txt](https://startbutton.gitbook.io/startbutton-product-api/llms.txt). Markdown versions of documentation pages are available by appending `.md` to page URLs; this page is available as [Markdown](https://startbutton.gitbook.io/startbutton-product-api/testing/test-numbers-for-collections.md).

# Test Numbers for Collections

The numbers are dedicated to helping you complete test collections in our sandbox environment.

### Test Numbers for S2S Collection

For s2s (Momo) collections initiated via the endpoint `{{baseUrl}}/transaction/initialize/s2s/mobile_money`

The next step after initiating the transaction is to verify the OTP using [OTP Verify](/startbutton-product-api/collections/server-to-server-integration-overview/s2s-mobile-money/otp-verify.md). Enter any 6-digit number as the OTP to complete the transaction.

**Use the numbers below:**

| Currency | Success        | Fail / Failed  |
| -------- | -------------- | -------------- |
| **GHS**  | +233501234567  | +233507654321  |
| **KES**  | +254701234567  | +254707654321  |
| **TZS**  | +255121212121  | +255750000020  |
| **RWF**  | +250131313131  | +250740000030  |
| **UGX**  | +256101010111  | +256760000010  |
| **XOF**  | +2250111111111 | +2250222222222 |

{% hint style="info" %}
These XOF test numbers use the Côte d'Ivoire format. For another CFA/XOF country, keep the same digit pattern and use that country's currency and dialing code.
{% endhint %}

### Test Numbers for Collection via the Checkout

For non-s2s collections initiated via `{{baseUrl}}/transaction/initialize`

To simulate an OTP process, use the OTP number, then in the modal, enter any 6-digit number as the OTP to complete the transaction. To simulate a PIN process, use the PIN-number, and after a few seconds, the transaction will be completed.

**Use the numbers below as required.**

| Currency | Success                                    | Fail / Failed                  |
| -------- | ------------------------------------------ | ------------------------------ |
| **GHS**  | +233501234567 (OTP), +233501234568 (PIN)   | +233507654321, +233507654322   |
| **KES**  | +254701234567 (OTP), +254701234568 (PIN)   | +254707654321, +254707654322   |
| **RWF**  | +250131313131 (OTP), +250131313132 (PIN)   | +250740000030, +250740000031   |
| **TZS**  | +255121212121 (OTP), +255121212122 (PIN)   | +255750000020, +255750000010   |
| **UGX**  | +256101010111(OTP), +256101010112(PIN)     | +256760000010, +256760000011   |
| **XOF**  | +2250111111111 (OTP), +2250111111112 (PIN) | +2250222222222, +2250222222223 |