developers:apiv2:certification [Documentation]

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====== Certification ======

[[developers:apiv2|◀ WebSocket API (V2)]]

Build and test against the **Simulator** ([[wss://wss-sim.t4login.com/v2]]). Certification is required before you receive Live credentials.

===== Getting started =====

Email **T4.APISupport@plus500.com** with a clear description of what your application does (markets, order types, expected volume, whether it routes orders or is market-data only).

===== Process =====

  - **Review** — support assesses your application and whether exchange involvement is needed.
  - **Exchange certification** — depending on the exchange and application type, you may need to complete the exchange's own certification.
  - **Application form** — once reviews are done, you are sent the API application form.
  - **Setup** — after the form is returned, support walks you through Live setup and issues credentials.

===== Before you certify =====

  * Reconnect and re-subscribe automatically (including across the weekly maintenance window).
  * Send heartbeats every 20s; handle server disconnects cleanly.
  * Parse ''Price'' / ''Decimal'' as native decimals, and handle decimal order volumes.
  * Handle order rejects and ''OrderUpdate'' ''FAILED'' states, not just the happy path.
  * Subscribe to an account and receive account, position and order updates.
  * Submit, revise and pull orders.