To export messages loaded to a layer to a file, use the command exchange/export_messages:

svc=exchange/export_messages&params={"layerName":<text>,
				     "format":<text>,
				     "compress":<bool>}

Current request can't be executed simultaneously with any request from this chapter and following requests:

• report/exec_report,
• report/export_result,
• report/get_result_chart,
• report/get_result_map,
• messages/load_interval,
• render/create_messages_layer,
• unit/get_trips,
• resource/get_driver_bindings,
• resource/get_trailer_bindings,
• account/get_account_history.

Returns a file of specified format.