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No API method must be called more than 200 times during a 24-hour period.

The frequency of calls must not exceed more than 8 times per hour.

Please contact HRMTS Support at for create a support ticket if you have any questions or need assistance.


HRMTS has implemented an API gatekeeper that enforces the limitations described above. This gatekeeper monitors the requests made to API per customer per API method, and rejects any call that exceeds the quota or throttle (speed limit). Upon rejection, the HTTP status code 204 (No Content) is returned, or an error message reading “API quota for the method is exceeded.”