Scheduler pallet

Derived from live runtime metadata on TRN root (pallet index 3, captured 2026-05-02). For prose-style documentation see Scheduler on the curated reference side.

Pallet index

3

Calls

6

Events

6

Errors

5

Storage items

3

Constants

2

Calls (extrinsics)

Scheduler.schedule

See [Pallet::schedule].

api.tx.scheduler.schedule(when: u32, maybe_periodic: Option<(u32,u32)>, priority: u8, call: Call)

Argument	Type	Doc
when	u32	BlockNumberFor<T>
maybe_periodic	Option&lt;(u32,u32)&gt;	Option<schedule::Period<BlockNumberFor<T>>>
priority	u8	schedule::Priority
call	Call	Box<<T as Config>::RuntimeCall>

Call index: 0

Scheduler.cancel

See [Pallet::cancel].

api.tx.scheduler.cancel(when: u32, index: u32)

Argument	Type	Doc
when	u32	BlockNumberFor<T>
index	u32	u32

Call index: 1

Scheduler.schedule_named

See [Pallet::schedule_named].

api.tx.scheduler.schedule_named(id: [u8;32], when: u32, maybe_periodic: Option<(u32,u32)>, priority: u8, call: Call)

Argument	Type	Doc
id	[u8;32]	TaskName
when	u32	BlockNumberFor<T>
maybe_periodic	Option&lt;(u32,u32)&gt;	Option<schedule::Period<BlockNumberFor<T>>>
priority	u8	schedule::Priority
call	Call	Box<<T as Config>::RuntimeCall>

Call index: 2

Scheduler.cancel_named

See [Pallet::cancel_named].

api.tx.scheduler.cancel_named(id: [u8;32])

Argument	Type	Doc
id	[u8;32]	TaskName

Call index: 3

Scheduler.schedule_after

See [Pallet::schedule_after].

api.tx.scheduler.schedule_after(after: u32, maybe_periodic: Option<(u32,u32)>, priority: u8, call: Call)

Argument	Type	Doc
after	u32	BlockNumberFor<T>
maybe_periodic	Option&lt;(u32,u32)&gt;	Option<schedule::Period<BlockNumberFor<T>>>
priority	u8	schedule::Priority
call	Call	Box<<T as Config>::RuntimeCall>

Call index: 4

Scheduler.schedule_named_after

See [Pallet::schedule_named_after].

api.tx.scheduler.schedule_named_after(id: [u8;32], after: u32, maybe_periodic: Option<(u32,u32)>, priority: u8, call: Call)

Argument	Type	Doc
id	[u8;32]	TaskName
after	u32	BlockNumberFor<T>
maybe_periodic	Option&lt;(u32,u32)&gt;	Option<schedule::Period<BlockNumberFor<T>>>
priority	u8	schedule::Priority
call	Call	Box<<T as Config>::RuntimeCall>

Call index: 5

Events

Scheduler.Scheduled

Scheduled some task.

Field	Type	Doc
when	u32
index	u32

Scheduler.Canceled

Canceled some task.

Field	Type	Doc
when	u32
index	u32

Scheduler.Dispatched

Dispatched some task.

Field	Type	Doc
task	(u32,u32)
id	Option<[u8;32]>
result	Result<Null, SpRuntimeDispatchError>

Scheduler.CallUnavailable

The call for the provided hash was not found so the task has been aborted.

Field	Type	Doc
task	(u32,u32)
id	Option<[u8;32]>

Scheduler.PeriodicFailed

The given task was unable to be renewed since the agenda is full at that block.

Field	Type	Doc
task	(u32,u32)
id	Option<[u8;32]>

Scheduler.PermanentlyOverweight

The given task can never be executed since it is overweight.

Field	Type	Doc
task	(u32,u32)
id	Option<[u8;32]>

Errors

Scheduler.FailedToSchedule

Failed to schedule a call

Scheduler.NotFound

Cannot find the scheduled call.

Scheduler.TargetBlockNumberInPast

Given target block number is in the past.

Scheduler.RescheduleNoChange

Reschedule failed because it does not change scheduled time.

Scheduler.Named

Attempt to use a non-named function on a named task.

Storage

Scheduler.IncompleteSince

await api.query.scheduler.incompleteSince()

Returns: u32

Modifier: Optional

Scheduler.Agenda

Items to be executed, indexed by the block number that they should be executed on.

await api.query.scheduler.agenda(key1)

• Key: u32 (hasher: Twox64Concat)
• Returns: Vec<Option<PalletSchedulerScheduled>>

Modifier: Default

Scheduler.Lookup

Lookup from a name to the block number and index of the task. For v3 -> v4 the previously unbounded identities are Blake2-256 hashed to form the v4 identities.

await api.query.scheduler.lookup(key1)

• Key: [u8;32] (hasher: Twox64Concat)
• Returns: (u32,u32)

Modifier: Optional

Constants

Scheduler.MaximumWeight

The maximum weight that may be scheduled per block for any dispatchables.

Type: {"refTime":"Compact<u64>","proofSize":"Compact<u64>"}
SCALE-encoded value: 0x070040b743ba13cccccccccccccccc

Scheduler.MaxScheduledPerBlock

The maximum number of scheduled calls in the queue for a single block. NOTE: + Dependent pallets' benchmarks might require a higher limit for the setting. Set a higher limit under runtime-benchmarks feature.

Type: u32
SCALE-encoded value: 0x32000000

Source: live chain metadata from wss://root.rootnet.live/archive/ws · captured 2026-05-02