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Confirm the Authorization: Bearer ... header, the environment, and that the key contains no spaces or line breaks.
Read detail. It may indicate an already registered account, an active allocation for the same pair, a reached limit, insufficient deposit, or non-withdrawable funds.
Review field names, types, allowed values, and the difference between omission, null, and an empty string.
Call GET /api/v1/mam/accounts/{account_login}/history-sync using the leader login.
  • HISTORY_SYNC_IN_PROGRESS: wait for COMPLETED.
  • HISTORY_SYNC_FAILED: correct error_message and request synchronization again.
  • HISTORY_SYNC_REQUIRED: the required import was canceled; request it again.
Do not disable required_before_subscription to bypass an import that your integration marked as required.
Preserve the same idempotency_key, apply backoff, and record X-Request-ID. Do not assume that a financial operation failed without retrieving its status.

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Information for support

Share only:
  • UTC date and time.
  • Method and path, without API keys or credentials.
  • HTTP code and request_id.
  • Applicable mt5_login, leader_id, allocation_id, or operation_id.
  • Redacted payload.
Do not send MT5 passwords, API keys, signing_secret, or unredacted webhook bodies.
Last modified on August 24, 2026