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Limits and status

Standard read-request limits and known exceptions. Write and streaming operations have their own limits in the operation reference. This page is not a live service-status page.

Request limits

Current request limits
LimitValue
Request body16 KiB (413 REQUEST_TOO_LARGE)
Answer2 MiB; larger answers are 502 RESPONSE_TOO_LARGE, never truncated
Waiting for the PC (standard reads)Up to 140 s in all; the PC has 120 s to execute
Requests in flight4 per organization (429 RELAY_BUSY)
Financial years per requestUp to 5, and no more than the plan covers
Credit-line streamUp to 5 minutes and 64 MiB per stream

These standard read-request figures may change with notice and apply regardless of plan or trial. Write and streaming operations can have different waiting, size and financial-year limits; check the operation you use.

Known limitations

  • A live request needs the PC to be on and connected; otherwise it answers 503 DEVICE_OFFLINE.
  • A Cloud-mode answer reflects the last completed synchronization, not live data.
  • One BUSY read runs at a time on the PC, so a long read can make the next one wait.