# Special Test Mode Values (/guides/special-test-mode-values)



In test mode, you may specify some special values to trigger some common scenarios.

## Payments [#payments]

In the test mode for the Payments (and Batch Payments) API, these account numbers for the receiver will trigger a payment failure.

| Account Number | Effect (non Batch)  | Effect (Batch)               |
| -------------- | ------------------- | ---------------------------- |
| `000000000`    | Failure (immediate) | Failure(this single payment) |
| `000000001`    | Failure (later)     | Failure(this single payment) |
| `000000002`    | Success             | Failure (entire batch)       |

## Direct Debit Authorizations [#direct-debit-authorizations]

In the test mode for the Direct Debit Authorizations API (Singapore only), a successful authorization always returns these hardcoded payer identification fields. They are not derived from a real payer ID.

To verify the hash, uppercase `S1234567D`, SHA-256 it, and hex-encode the digest (64 characters). The result should match `payerIdHash`.

| Field         | Value                                                              |
| ------------- | ------------------------------------------------------------------ |
| `payerIdType` | `NRIC`                                                             |
| `payerIdHash` | `3578b829767388a631b999b7049e830827b3e99b7504581bcfefa72def689658` |

## Direct Debit Payments [#direct-debit-payments]

In the test mode for the Direct Debit Payments API, these customer references will trigger a payment failure.

| Customer Reference | Effect  |
| ------------------ | ------- |
| `fail`             | Failure |

## Hosted Payments [#hosted-payments]

In the test mode for the Hosted Payments API, these hosted payment method IDs will trigger specific scenarios.

| Hosted Payment Method ID                            | Effect                                                                                                           |
| --------------------------------------------------- | ---------------------------------------------------------------------------------------------------------------- |
| `hpm_TESTMODESUCCEEDED`                             | successful payment                                                                                               |
| `hpm_TESTMODEFAILED_PAYLAHWALLETDELINKED`           | failure - customer has unlinked their PayLah! wallet                                                             |
| `hpm_TESTMODEPENDING_INSUFFICIENTFUNDSPENDINGTOPUP` | failure - there is insufficient balance in the customer's PayLah! wallet, and they have been prompted to top up. |