Infohub (Flow)Reference

Consumer Placeholder Token Reference

All 104 payload placeholder tokens across 10 contexts, read from the shared consumer placeholder engine.

Updated 15 Oct 2026Infohub Docs

The four payload consumers — MQTT, Apache Kafka, Azure Event Hub and AWS Kinesis — now share one placeholder engine, so this is the complete token set for all of them, read from the engine at v7.2.0.

A token resolves only when its context is in scope. Publishing a calendar value puts the measure, time period and measure value contexts in scope; publishing an event-sliced value puts the event period and event scheme contexts in scope instead. A token from a context that is not in scope is left unresolved rather than blanked, which is what makes an unsubstituted [token] in a payload a useful diagnostic — see Consumer Placeholder Reference for how to read one.

Every date token comes in six forms#

A timestamp is registered once and expands to six tokens. Picking the right one is usually the difference between a destination that parses your payload and one that does not:

Form	Example	Gives
`[name]`	`[periodstart]`	The instance's local time
`[name]utc`	`[periodstartutc]`	UTC
`[name]unix`	`[periodstartunix]`	Epoch seconds
`[name]unix_ms`	`[periodstartunix_ms]`	Epoch milliseconds
`[name]utcunix`	`[periodstartutcunix]`	Epoch seconds
`[name]utcunix_ms`	`[periodstartutcunix_ms]`	Epoch milliseconds

Epoch values are an instant, so the unix and utcunix spellings are the same number — both exist so a payload can read consistently alongside its neighbours.

Important

The bare token is instance-local, not UTC. [periodstart] is rendered in the instance's time zone. A destination that assumes UTC will silently shift every timestamp by your offset, and the data will look plausible. Where the receiving system expects UTC, say so explicitly with [periodstartutc].

Always available#

Resolvable in every payload, with no context required.

Token	Kind	Notes
`[now]`	date
`[nowutc]`	date

Measure#

The measure being published — its identity, naming and configuration.

Token	Kind	Notes
`[hierarchicalname]`	text
`[instancename]`	text
`[intervaltype]`	alias	alias for [measureintervaltype]
`[measuredescription]`	text
`[measureformat]`	text
`[measureid]`	number
`[measureintervaltype]`	text
`[measurename]`	text
`[measureparent]`	text
`[measureuom]`	text
`[parent]`	alias	alias for [measureparent]
`[timescheme]`	text

Time period#

The calendar period a value belongs to.

Token	Kind	Notes
`[periodend]`	date	instance local time
`[periodendunix_ms]`	epoch	milliseconds
`[periodendunix]`	epoch	seconds
`[periodendutc]`	date	UTC
`[periodendutcunix_ms]`	epoch	milliseconds
`[periodendutcunix]`	epoch	seconds
`[periodstart]`	date	instance local time
`[periodstartunix_ms]`	epoch	milliseconds
`[periodstartunix]`	epoch	seconds
`[periodstartutc]`	date	UTC
`[periodstartutcunix_ms]`	epoch	milliseconds
`[periodstartutcunix]`	epoch	seconds
`[timeperiodid]`	number
`[timeschemeshift]`	text

Measure value#

The value itself, with its quality, version and provenance.

Token	Kind	Notes
`[attribute]`	text
`[attributevalue]`	text
`[duration]`	number
`[formattedvalue]`	text
`[measurevalue]`	number
`[measurevaluedatetime]`	date	instance local time
`[measurevaluedatetimeunix_ms]`	epoch	milliseconds
`[measurevaluedatetimeunix]`	epoch	seconds
`[measurevaluedatetimeutc]`	date	UTC
`[measurevaluedatetimeutcunix_ms]`	epoch	milliseconds
`[measurevaluedatetimeutcunix]`	epoch	seconds
`[measurevalueid]`	number
`[preferred]`	text
`[quality]`	number
`[stringvalue]`	text
`[usernameid]`	number
`[version]`	number

Event period#

The event instance, when publishing event-sliced data.

Token	Kind	Notes
`[duration]`	number
`[eventperiodid]`	number
`[periodend]`	date	instance local time
`[periodendquality]`	number
`[periodendunix_ms]`	epoch	milliseconds
`[periodendunix]`	epoch	seconds
`[periodendutc]`	date	UTC
`[periodendutcunix_ms]`	epoch	milliseconds
`[periodendutcunix]`	epoch	seconds
`[periodstart]`	date	instance local time
`[periodstartquality]`	number
`[periodstartunix_ms]`	epoch	milliseconds
`[periodstartunix]`	epoch	seconds
`[periodstartutc]`	date	UTC
`[periodstartutcunix_ms]`	epoch	milliseconds
`[periodstartutcunix]`	epoch	seconds
`[preferredevent]`	text

Event scheme#

The event scheme the period belongs to.

Token	Kind	Notes
`[eventscheme]`	alias	alias for [eventschemename]
`[eventschemedescription]`	text
`[eventschemeid]`	number
`[eventschemename]`	text

Measure event period value#

A measure value sliced by an event period.

Token	Kind	Notes
`[attribute]`	text
`[attributevalue]`	text
`[eventschemesetname]`	text
`[formattedvalue]`	text
`[measureeventperiodvalue]`	number
`[measureeventperiodvaluedatetime]`	date	instance local time
`[measureeventperiodvaluedatetimeunix_ms]`	epoch	milliseconds
`[measureeventperiodvaluedatetimeunix]`	epoch	seconds
`[measureeventperiodvaluedatetimeutc]`	date	UTC
`[measureeventperiodvaluedatetimeutcunix_ms]`	epoch	milliseconds
`[measureeventperiodvaluedatetimeutcunix]`	epoch	seconds
`[measureeventperiodvalueid]`	number
`[name]`	text
`[preferred]`	text
`[quality]`	number
`[stringvalue]`	text
`[usernameid]`	number
`[value]`	alias	alias for [measureeventperiodvalue]
`[version]`	number

Event attribute values#

Attribute values on the event; searched across several periods in order.

Token	Kind	Notes
`[preferred]`	text

Backfill#

Whether this payload is a backfill rather than a live publish.

Token	Kind	Notes
`[backfill]`	text

Raw value#

A raw timestamped reading — the context used when publishing a tag.

Token	Kind	Notes
`[measureintervaltype]`	text
`[measurevalue]`	number
`[periodstart]`	date	instance local time
`[periodstartunix_ms]`	epoch	milliseconds
`[periodstartunix]`	epoch	seconds
`[periodstartutc]`	date	UTC
`[periodstartutcunix_ms]`	epoch	milliseconds
`[periodstartutcunix]`	epoch	seconds
`[quality]`	number
`[stringvalue]`	text
`[timestamp]`	date	instance local time
`[timestampunix_ms]`	epoch	milliseconds
`[timestampunix]`	epoch	seconds
`[timestamputc]`	date	UTC
`[timestamputcunix_ms]`	epoch	milliseconds
`[timestamputcunix]`	epoch	seconds
`[value]`	alias	alias for [measurevalue]

Diagnosing#

Symptom	Likely cause
A literal `[token]` arrives at the destination	That token's context is not in scope for this publish — check the table above
Timestamps are out by your UTC offset	A bare date token was used where the destination expects UTC
A number arrives with a comma decimal separator	Not possible here: the engine formats numbers with the invariant culture deliberately
`[attributevalue]` is `_`	A calendar value with no attribute breakdown emits an underscore rather than an empty string
A token worked on one consumer and not another	Before the shared engine, each consumer had its own token list; they are now identical