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Every FlashAPI endpoint is documented using its Production path, which starts with:
To call the same endpoint in the Sandbox, insert /sandbox immediately before /oapi. The rest of the request remains exactly the same, including: * Endpoint path * Query parameters * Request body * Headers

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URL Structure

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Production

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Sandbox

The only difference is the /sandbox segment:

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Switching Between Sandbox and Production

All code examples in this guide use the Sandbox URL by default. You can copy and run the examples directly for testing. When you are ready to switch to Production, replace only the base URL.

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Example

Sandbox:
Production:
The following remain unchanged: * Endpoint path * Query parameters * Request body * Headers * API request structure
You only need to replace the base URL when switching from Sandbox to Production. No changes to the endpoint path, parameters, or request structure are required.
Before calling Production APIs, make sure your Production OpenAPI access has been approved and you are using the appropriate Production credentials.