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Reference

Limits

Size and run-time ceilings for flows.

Size (enforced when you save)

LimitValue
Steps per flow150
Connections per flow300
Flows per location100
Flow name length60
One flow, serialised64 KiB
All flows, serialised192 KiB
Concurrent runs per hub8

The three size limits also block Save draft, not just Publish.

Run time and step options

ConstantValue
FLOW_COOLDOWN_MAX_SECONDS86400
FLOW_DELAY_MAX_SECONDS86400
FLOW_HTTP_MAX_HEADERS10
FLOW_HTTP_MAX_TIMEOUT_SECONDS30
FLOW_INTEGRATION_MAX_TARGETS50
FLOW_INTEGRATION_PARAMS_MAX_BYTES8192
FLOW_MANUAL_TEST_MAX_ENTRIES20
FLOW_MAX_CALL_DEPTH8
FLOW_MAX_SERVICE_PARAMS40
FLOW_MAX_STEPS_PER_RUN200
FLOW_MAX_VARIABLES50
FLOW_NOTIFY_MAX_MESSAGE_CHARS500
FLOW_NOTIFY_MAX_RECIPIENTS50
FLOW_NOTIFY_MAX_TITLE_CHARS100
FLOW_SCHEDULE_MAX_BLOCKS20
FLOW_SPEAK_MAX_CHARS300
FLOW_SUN_OFFSET_MAX_MINUTES720
FLOW_VARIABLE_MAX_STRING500
FLOW_VARIABLE_MAX_VALUES20
PRESENCE_SCHEDULER_AWAY_EXITaway
PRESENCE_SCHEDULER_MAX_SCHEDULES12
PRESENCE_SCHEDULER_NONE_EXITnone
FLOW_LIST_RUNS_MAX50
FLOW_DEBUG_MAX_BREAKPOINTS100
FLOW_DEBUG_MAX_PAUSE_MS600000

Enumerations

ConstantValues
FLOW_SECONDARY_BRANCHESfalse, inactive
FLOW_ALARM_EVENTSarmed, armed-away, armed-stay, disarmed, arming, pending, triggered, zone-opened
FLOW_ALARM_PANELSintrusion, smoke, co
FLOW_ALARM_STATESarmed, armed-away, armed-stay, disarmed, triggered
FLOW_BUTTON_ACTIONSsingle, double, hold, release
FLOW_DAYS_OF_WEEKsun, mon, tue, wed, thu, fri, sat
FLOW_HTTP_CONTENT_TYPESjson, text, form
FLOW_HTTP_METHODSGET, POST, PUT, PATCH, DELETE
FLOW_MANUAL_TEST_KEY_SUGGESTIONS[object Object], [object Object], [object Object], [object Object], [object Object], [object Object], [object Object], [object Object]
FLOW_NOTIFY_CHANNELSpush, sms, email, banner
FLOW_VARIABLE_CONDITIONSequals, not-equals, one-of, not-one-of, above, below, is-set, not-set, older-than, newer-than
FLOW_VARIABLE_OPSset, increment, decrement, now, from-state, from-attribute, clear
FLOW_WAIT_OVERLAPSparallel, restart, stop
FLOW_WIDGET_TYPESwhen-entity-state, when-time, when-sun, when-presence, when-flow-called, when-manual, when-sensor, when-interval, when-cron, when-button, when-timer, when-attribute, when-alarm, when-schedule, when-presence-scheduler, when-holiday, and-entity-state, and-sensor, and-time-between, and-day-of-week, and-holiday, and-schedule, and-presence, and-attribute, and-alarm, and-sun, and-rate-limit, and-variable, then-service, then-scene, then-notify, then-delay, then-wait-until, then-stop-waiting, then-run-flow, then-integration-service, then-debug, then-stop, then-set-variable, then-log, then-speak, then-http
FLOW_TEMPLATE_PLACEHOLDERS[object Object], [object Object], [object Object], [object Object], [object Object], [object Object], [object Object], [object Object], [object Object]
FLOW_TRIGGER_VALUE_PATHS[object Object], [object Object], [object Object], [object Object], [object Object], [object Object], [object Object]
FLOW_TRACE_KINDSrun-start, run-end, step-start, step-end, condition, action, wait, paused, resumed, debug, breakpoints, dropped
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