---
description: "This endpoint creates a simulated fiat deposit in the sandbox environment for testing purposes."
title: "Simulate Fiat Deposit"
---

# Simulate Fiat Deposit

> This endpoint creates a simulated fiat deposit in the sandbox environment for testing purposes.

```http
POST /sandbox/fiat-deposit/simulate
```

- `https://api.sandbox.noah.com/v1/sandbox/fiat-deposit/simulate` — V1 Sandbox Server
- `https://api.noah.com/v1/sandbox/fiat-deposit/simulate` — V1 Production Server

## Authentication

- `X-Api-Key`: Your Noah API key. Required on all requests. See [API Keys](/api-concepts/authentication/api).
- `Api-Signature`: Digitally signed JWT used to verify request authenticity. Optional in sandbox when your API key has no associated signing public key; required in production for all requests. If sent, the signature is always validated. See [Request Signing](/api-concepts/authentication/signing).

## Request body

### `application/json`

| Field | Type | Required | Description |
| --- | --- | --- | --- |
| `PaymentMethodID` | string | Yes | Existing payment method id to be used. (length 1-150) |
| `FiatAmount` | string | Yes | The amount of the deposit. (length 1-38; pattern `^[+]?([.]\d+\|\d+[.]?\d*)$`) |
| `FiatCurrency` | string | Yes | Supported fiat ISO_4217 3 letter currency codes. |
| `Reference` | string | No | Optional reference of the deposit for testing purposes. |

## Responses

### 200 — Fiat deposit created successfully

#### `application/json`

| Field | Type | Required | Description |
| --- | --- | --- | --- |
| `FiatDepositID` | string | Yes |  |

### 400 — Bad request

### 401 — Client is not authorized to perform this action

### 500 — Internal server error

Error responses share one `Error` envelope across the whole API. See https://docs.noah.com/api-concepts/errors.md for its fields, the `Type` values, and the field-level validation details in `RequestExtension` and `DenyExtension`.

## See also

- Rendered reference: https://docs.noah.com/api-reference/simulate-fiat-deposit
- OpenAPI document: https://docs.noah.com/files/oas-schema.generated.json