Calls

bond

Take the origin account as a stash and lock up value of its balance. controller will be the account that controls it. value must be more than the minimum_balance specified by T::Currency. The dispatch origin for this call must be Signed by the stash account. Emits Bonded. Namespace
api.tx.staking.bond
Type
function bond(
  controller: SeedPrimitivesSignatureAccountId20,
  value: Compact<u128>,
  payee: PalletStakingRewardDestination
)

bondExtra

Add some extra amount that have appeared in the stash free_balance into the balance up for staking. The dispatch origin for this call must be Signed by the stash, not the controller. Use this if there are additional funds in your stash account that you wish to bond. Unlike bond or unbond this function does not impose any limitation on the amount that can be added. Emits Bonded. Namespace
api.tx.staking.bondExtra
Type
function bondExtra(
  max_additional: Compact<u128>
)

cancelDeferredSlash

Cancel enactment of a deferred slash. Can be called by the T::SlashCancelOrigin. Parameters: era and indices of the slashes for that era to kill. Namespace
api.tx.staking.cancelDeferredSlash
Type
function cancelDeferredSlash(
  era: u32,
  slash_indices: Vec<u32>
)

chill

Declare no desire to either validate or nominate. Effects will be felt at the beginning of the next era. The dispatch origin for this call must be Signed by the controller, not the stash. Namespace
api.tx.staking.chill
Type
function chill(

)

chillOther

Declare a controller to stop participating as either a validator or nominator. Effects will be felt at the beginning of the next era. The dispatch origin for this call must be Signed, but can be called by anyone. If the caller is the same as the controller being targeted, then no further checks are enforced, and this function behaves just like chill. If the caller is different than the controller being targeted, the following conditions must be met:
  • controller must belong to a nominator who has become non-decodable,
Or:
  • A ChillThreshold must be set and checked which defines how close to the max nominators or validators we must reach before users can start chilling one-another.
  • A MaxNominatorCount and MaxValidatorCount must be set which is used to determine how close we are to the threshold.
  • A MinNominatorBond and MinValidatorBond must be set and checked, which determines if this is a person that should be chilled because they have not met the threshold bond required.
This can be helpful if bond requirements are updated, and we need to remove old users who do not satisfy these requirements. Namespace
api.tx.staking.chillOther
Type
function chillOther(
  controller: SeedPrimitivesSignatureAccountId20
)

forceApplyMinCommission

Force a validator to have at least the minimum commission. This will not affect a validator who already has a commission greater than or equal to the minimum. Any account can call this. Namespace
api.tx.staking.forceApplyMinCommission
Type
function forceApplyMinCommission(
  validator_stash: SeedPrimitivesSignatureAccountId20
)

forceNewEra

Force there to be a new era at the end of the next session. After this, it will be reset to normal (non-forced) behaviour. The dispatch origin must be Root.
Warning: The election process starts multiple blocks before the end of the era. If this is called just before a new era is triggered, the election process may not have enough blocks to get a result.
Namespace
api.tx.staking.forceNewEra
Type
function forceNewEra(

)

forceNewEraAlways

Force there to be a new era at the end of sessions indefinitely. The dispatch origin must be Root.
Warning: The election process starts multiple blocks before the end of the era. If this is called just before a new era is triggered, the election process may not have enough blocks to get a result.
Namespace
api.tx.staking.forceNewEraAlways
Type
function forceNewEraAlways(

)

forceNoEras

Force there to be no new eras indefinitely. The dispatch origin must be Root.
Warning: The election process starts multiple blocks before the end of the era. Thus the election process may be ongoing when this is called. In this case, the election will continue until the next era is triggered.
Namespace
api.tx.staking.forceNoEras
Type
function forceNoEras(

)

forceUnstake

Force a current staker to become completely unstaked, immediately. The dispatch origin must be Root. Namespace
api.tx.staking.forceUnstake
Type
function forceUnstake(
  stash: SeedPrimitivesSignatureAccountId20,
  num_slashing_spans: u32
)

increaseValidatorCount

Increments the ideal number of validators. The dispatch origin must be Root. Namespace
api.tx.staking.increaseValidatorCount
Type
function increaseValidatorCount(
  additional: Compact<u32>
)

kick

Remove the given nominations from the calling validator. Effects will be felt at the beginning of the next era. The dispatch origin for this call must be Signed by the controller, not the stash.
  • who: A list of nominator stash accounts who are nominating this validator which should no longer be nominating this validator.
Note: Making this call only makes sense if you first set the validator preferences to block any further nominations. Namespace
api.tx.staking.kick
Type
function kick(
  who: Vec<SeedPrimitivesSignatureAccountId20>
)

nominate

Declare the desire to nominate targets for the origin controller. Effects will be felt at the beginning of the next era. The dispatch origin for this call must be Signed by the controller, not the stash. Namespace
api.tx.staking.nominate
Type
function nominate(
  targets: Vec<SeedPrimitivesSignatureAccountId20>
)

payoutStakers

Currently disabled on TRN in favour of the Vortex Distribution System
Pay out all the stakers behind a single validator for a single era.
  • validator_stash is the stash account of the validator. Their nominators, up to T::MaxNominatorRewardedPerValidator, will also receive their rewards.
  • era may be any era between [current_era - history_depth; current_era].
The origin of this call must be Signed. Any account can call this function, even if it is not one of the stakers. Namespace
api.tx.staking.payoutStakers
Type
function payoutStakers(
  validator_stash: SeedPrimitivesSignatureAccountId20,
  era: u32
)

reapStash

Remove all data structures concerning a staker/stash once it is at a state where it can be considered dust in the staking system. The requirements are:
  1. the total_balance of the stash is below existential deposit. 2. or, the ledger.total of the stash is below existential deposit.
The former can happen in cases like a slash; the latter when a fully unbonded account is still receiving staking rewards in RewardDestination::Staked. It can be called by anyone, as long as stash meets the above requirements. Refunds the transaction fees upon successful execution. Namespace
api.tx.staking.reapStash
Type
function reapStash(
  stash: SeedPrimitivesSignatureAccountId20,
  num_slashing_spans: u32
)

rebond

Rebond a portion of the stash scheduled to be unlocked. The dispatch origin must be signed by the controller. Namespace
api.tx.staking.rebond
Type
function rebond(
  value: Compact<u128>
)

scaleValidatorCount

Scale up the ideal number of validators by a factor. The dispatch origin must be Root. Namespace
api.tx.staking.scaleValidatorCount
Type
function scaleValidatorCount(
  factor: Percent
)

setController

(Re-)set the controller of a stash. Effects will be felt instantly (as soon as this function is completed successfully). The dispatch origin for this call must be Signed by the stash, not the controller. Namespace
api.tx.staking.setController
Type
function setController(
  controller: SeedPrimitivesSignatureAccountId20
)

setInvulnerables

Set the validators who cannot be slashed (if any). The dispatch origin must be Root. Namespace
api.tx.staking.setInvulnerables
Type
function setInvulnerables(
  invulnerables: Vec<SeedPrimitivesSignatureAccountId20>
)

setPayee

(Re-)set the payment target for a controller. Effects will be felt instantly (as soon as this function is completed successfully). The dispatch origin for this call must be Signed by the controller, not the stash. Namespace
api.tx.staking.setPayee
Type
function setPayee(
  payee: PalletStakingRewardDestination
)

setStakingConfigs

Update the various staking configurations .
  • min_nominator_bond: The minimum active bond needed to be a nominator.
  • min_validator_bond: The minimum active bond needed to be a validator.
  • max_nominator_count: The max number of users who can be a nominator at once. When set to None, no limit is enforced.
  • max_validator_count: The max number of users who can be a validator at once. When set to None, no limit is enforced.
  • chill_threshold: The ratio of max_nominator_count or max_validator_count which should be filled in order for the chill_other transaction to work.
  • min_commission: The minimum amount of commission that each validators must maintain. This is checked only upon calling validate. Existing validators are not affected.
RuntimeOrigin must be Root to call this function. NOTE: Existing nominators and validators will not be affected by this update. to kick people under the new limits, chill_other should be called. Namespace
api.tx.staking.setStakingConfigs
Type
function setStakingConfigs(
  min_nominator_bond: PalletStakingPalletConfigOpU128,
  min_validator_bond: PalletStakingPalletConfigOpU128,
  max_nominator_count: PalletStakingPalletConfigOpU32,
  max_validator_count: PalletStakingPalletConfigOpU32,
  chill_threshold: PalletStakingPalletConfigOpPercent,
  min_commission: PalletStakingPalletConfigOpPerbill
)

setValidatorCount

Sets the ideal number of validators. The dispatch origin must be Root. Namespace
api.tx.staking.setValidatorCount
Type
function setValidatorCount(
  new: Compact<u32>
)

unbond

Schedule a portion of the stash to be unlocked ready for transfer out after the bond period ends. If this leaves an amount actively bonded less than T::Currency::minimum_balance(), then it is increased to the full amount. The dispatch origin for this call must be Signed by the controller, not the stash. Once the unlock period is done, you can call withdraw_unbonded to actually move the funds out of management ready for transfer. No more than a limited number of unlocking chunks (see MaxUnlockingChunks) can co-exists at the same time. In that case, [Call::withdraw_unbonded] need to be called first to remove some of the chunks (if possible). If a user encounters the InsufficientBond error when calling this extrinsic, they should call chill first in order to free up their bonded funds. Emits Unbonded. See also [Call::withdraw_unbonded]. Namespace
api.tx.staking.unbond
Type
function unbond(
  value: Compact<u128>
)

validate

Declare the desire to validate for the origin controller. Effects will be felt at the beginning of the next era. The dispatch origin for this call must be Signed by the controller, not the stash. preferences contain the Validator Commission which is a Perbill value Namespace
api.tx.staking.validate
Type
function validate(
  prefs: PalletStakingValidatorPrefs
)

withdrawUnbonded

Remove any unlocked chunks from the unlocking queue from our management. This essentially frees up that balance to be used by the stash account to do whatever it wants. The dispatch origin for this call must be Signed by the controller. Emits Withdrawn. See also [Call::unbond]. Namespace
api.tx.staking.withdrawUnbonded
Type
function withdrawUnbonded(
  num_slashing_spans: u32
)

Storage

activeEra

The active era information, it holds index and start. The active era is the era being currently rewarded. Validator set of this era must be equal to [SessionInterface::validators]. Namespace
api.query.staking.activeEra
Type
function activeEra(

): Option<PalletStakingActiveEraInfo>

bonded

Map from all locked “stash” accounts to the controller account. Namespace
api.query.staking.bonded
Type
function bonded(
  SeedPrimitivesSignatureAccountId20
): Option<SeedPrimitivesSignatureAccountId20>

bondedEras

A mapping from still-bonded eras to the first session index of that era. Must contains information for eras for the range: [active_era - bounding_duration; active_era] Namespace
api.query.staking.bondedEras
Type
function bondedEras(

): Vec<(u32,u32)>

canceledSlashPayout

The amount of currency given to reporters of a slash event which was canceled by extraordinary circumstances (e.g. governance). Namespace
api.query.staking.canceledSlashPayout
Type
function canceledSlashPayout(

): u128

chillThreshold

The threshold for when users can start calling chill_other for other validators / nominators. The threshold is compared to the actual number of validators / nominators (CountFor*) in the system compared to the configured max (Max*Count). Namespace
api.query.staking.chillThreshold
Type
function chillThreshold(

): Option<Percent>

counterForNominators

Counter for the related counted storage map Namespace
api.query.staking.counterForNominators
Type
function counterForNominators(

): u32

counterForValidators

Counter for the related counted storage map Namespace
api.query.staking.counterForValidators
Type
function counterForValidators(

): u32

currentEra

The current era index. This is the latest planned era, depending on how the Session pallet queues the validator set, it might be active or not. Namespace
api.query.staking.currentEra
Type
function currentEra(

): Option<u32>

currentPlannedSession

The last planned session scheduled by the session pallet. This is basically in sync with the call to [pallet_session::SessionManager::new_session]. Namespace
api.query.staking.currentPlannedSession
Type
function currentPlannedSession(

): u32

erasRewardPoints

Rewards for the last HISTORY_DEPTH eras. If reward hasn’t been set or has been removed then 0 reward is returned. Namespace
api.query.staking.erasRewardPoints
Type
function erasRewardPoints(
  u32
): PalletStakingEraRewardPoints

erasStakers

Exposure of validator at era. This is keyed first by the era index to allow bulk deletion and then the stash account. Is it removed after HISTORY_DEPTH eras. If stakers hasn’t been set or has been removed then empty exposure is returned. Namespace
api.query.staking.erasStakers
Type
function erasStakers(
  u32,
  SeedPrimitivesSignatureAccountId20
): PalletStakingExposure

erasStakersClipped

Clipped Exposure of validator at era. This is similar to [ErasStakers] but number of nominators exposed is reduced to the T::MaxNominatorRewardedPerValidator biggest stakers. Note: The field total and own of the exposure remains unchanged. This is used to limit the i/o cost for the nominator payout. This is keyed fist by the era index to allow bulk deletion and then the stash account. Is it removed after HISTORY_DEPTH eras. If stakers hasn’t been set or has been removed then empty exposure is returned. Namespace
api.query.staking.erasStakersClipped
Type
function erasStakersClipped(
  u32,
  SeedPrimitivesSignatureAccountId20
): PalletStakingExposure

erasStartSessionIndex

The session index at which the era start for the last HISTORY_DEPTH eras. Note: This tracks the starting session (i.e. session index when era start being active) for the eras in [CurrentEra - HISTORY_DEPTH, CurrentEra]. Namespace
api.query.staking.erasStartSessionIndex
Type
function erasStartSessionIndex(
  u32
): Option<u32>

erasTotalStake

The total amount staked for the last HISTORY_DEPTH eras. If total hasn’t been set or has been removed then 0 stake is returned. Namespace
api.query.staking.erasTotalStake
Type
function erasTotalStake(
  u32
): u128

erasValidatorPrefs

Similar to ErasStakers, this holds the preferences of validators. This is keyed first by the era index to allow bulk deletion and then the stash account. Is it removed after HISTORY_DEPTH eras. Namespace
api.query.staking.erasValidatorPrefs
Type
function erasValidatorPrefs(
  u32,
  SeedPrimitivesSignatureAccountId20
): PalletStakingValidatorPrefs

erasValidatorReward

The total validator era payout for the last HISTORY_DEPTH eras. Eras that haven’t finished yet or has been removed doesn’t have reward. Namespace
api.query.staking.erasValidatorReward
Type
function erasValidatorReward(
  u32
): Option<u128>

forceEra

Mode of era forcing. Namespace
api.query.staking.forceEra
Type
function forceEra(

): PalletStakingForcing

invulnerables

Any validators that may never be slashed or forcibly kicked. It’s a Vec since they’re easy to initialize and the performance hit is minimal (we expect no more than four invulnerables) and restricted to testnets. Namespace
api.query.staking.invulnerables
Type
function invulnerables(

): Vec<SeedPrimitivesSignatureAccountId20>

ledger

Map from all (unlocked) “controller” accounts to the info regarding the staking. Namespace
api.query.staking.ledger
Type
function ledger(
  SeedPrimitivesSignatureAccountId20
): Option<PalletStakingStakingLedger>

maxNominatorsCount

The maximum nominator count before we stop allowing new validators to join. When this value is not set, no limits are enforced. Namespace
api.query.staking.maxNominatorsCount
Type
function maxNominatorsCount(

): Option<u32>

maxValidatorsCount

The maximum validator count before we stop allowing new validators to join. When this value is not set, no limits are enforced. Namespace
api.query.staking.maxValidatorsCount
Type
function maxValidatorsCount(

): Option<u32>

minCommission

The minimum amount of commission that validators can set. If set to 0, no limit exists. Namespace
api.query.staking.minCommission
Type
function minCommission(

): Perbill

minimumValidatorCount

Minimum number of staking participants before emergency conditions are imposed. Namespace
api.query.staking.minimumValidatorCount
Type
function minimumValidatorCount(

): u32

minNominatorBond

The minimum active bond to become and maintain the role of a nominator. Namespace
api.query.staking.minNominatorBond
Type
function minNominatorBond(

): u128

minValidatorBond

The minimum active bond to become and maintain the role of a validator. Namespace
api.query.staking.minValidatorBond
Type
function minValidatorBond(

): u128

nominators

The map from nominator stash key to their nomination preferences, namely the validators that they wish to support. Note that the keys of this storage map might become non-decodable in case the [Config::MaxNominations] configuration is decreased. In this rare case, these nominators are still existent in storage, their key is correct and retrievable (i.e. contains_key indicates that they exist), but their value cannot be decoded. Therefore, the non-decodable nominators will effectively not-exist, until they re-submit their preferences such that it is within the bounds of the newly set Config::MaxNominations. This implies that ::iter_keys().count() and ::iter().count() might return different values for this map. Moreover, the main ::count() is aligned with the former, namely the number of keys that exist. Lastly, if any of the nominators become non-decodable, they can be chilled immediately via [Call::chill_other] dispatchable by anyone. Namespace
api.query.staking.nominators
Type
function nominators(
  SeedPrimitivesSignatureAccountId20
): Option<PalletStakingNominations>

nominatorSlashInEra

All slashing events on nominators, mapped by era to the highest slash value of the era. Namespace
api.query.staking.nominatorSlashInEra
Type
function nominatorSlashInEra(
  u32,
  SeedPrimitivesSignatureAccountId20
): Option<u128>

offendingValidators

Indices of validators that have offended in the active era and whether they are currently disabled. This value should be a superset of disabled validators since not all offences lead to the validator being disabled (if there was no slash). This is needed to track the percentage of validators that have offended in the current era, ensuring a new era is forced if OffendingValidatorsThreshold is reached. The vec is always kept sorted so that we can find whether a given validator has previously offended using binary search. It gets cleared when the era ends. Namespace
api.query.staking.offendingValidators
Type
function offendingValidators(

): Vec<(u32,bool)>

payee

Where the reward payment should be made. Keyed by stash. Namespace
api.query.staking.payee
Type
function payee(
  SeedPrimitivesSignatureAccountId20
): PalletStakingRewardDestination

slashingSpans

Slashing spans for stash accounts. Namespace
api.query.staking.slashingSpans
Type
function slashingSpans(
  SeedPrimitivesSignatureAccountId20
): Option<PalletStakingSlashingSlashingSpans>

slashRewardFraction

The percentage of the slash that is distributed to reporters. The rest of the slashed value is handled by the Slash. Namespace
api.query.staking.slashRewardFraction
Type
function slashRewardFraction(

): Perbill

spanSlash

Records information about the maximum slash of a stash within a slashing span, as well as how much reward has been paid out. Namespace
api.query.staking.spanSlash
Type
function spanSlash(
  (SeedPrimitivesSignatureAccountId20,u32)
): PalletStakingSlashingSpanRecord

storageVersion

True if network has been upgraded to this version. Storage version of the pallet. This is set to v7.0.0 for new networks. Namespace
api.query.staking.storageVersion
Type
function storageVersion(

): PalletStakingReleases

unappliedSlashes

All unapplied slashes that are queued for later. Namespace
api.query.staking.unappliedSlashes
Type
function unappliedSlashes(
  u32
): Vec<PalletStakingUnappliedSlash>

validatorCount

The ideal number of staking participants. Namespace
api.query.staking.validatorCount
Type
function validatorCount(

): u32

validators

The map from (wannabe) validator stash key to the preferences of that validator. Namespace
api.query.staking.validators
Type
function validators(
  SeedPrimitivesSignatureAccountId20
): PalletStakingValidatorPrefs

validatorSlashInEra

All slashing events on validators, mapped by era to the highest slash proportion and slash value of the era. Namespace
api.query.staking.validatorSlashInEra
Type
function validatorSlashInEra(
  u32,
  SeedPrimitivesSignatureAccountId20
): Option<(Perbill,u128)>

Events

Bonded

An account has bonded this amount. [stash, amount] NOTE: This event is only emitted when funds are bonded via a dispatchable. Notably, it will not be emitted for staking rewards when they are added to stake. Namespace
api.events.staking.Bonded
Type
type Bonded = {
  stash: SeedPrimitivesSignatureAccountId20,
  amount: u128
}

Chilled

An account has stopped participating as either a validator or nominator. Namespace
api.events.staking.Chilled
Type
type Chilled = {
  stash: SeedPrimitivesSignatureAccountId20
}

EraPaid

The era payout has been set; the first balance is the validator-payout; the second is the remainder from the maximum amount of reward. Namespace
api.events.staking.EraPaid
Type
type EraPaid = {
  era_index: u32,
  validator_payout: u128,
  remainder: u128
}

Kicked

A nominator has been kicked from a validator. Namespace
api.events.staking.Kicked
Type
type Kicked = {
  nominator: SeedPrimitivesSignatureAccountId20,
  stash: SeedPrimitivesSignatureAccountId20
}

OldSlashingReportDiscarded

An old slashing report from a prior era was discarded because it could not be processed. Namespace
api.events.staking.OldSlashingReportDiscarded
Type
type OldSlashingReportDiscarded = {
  session_index: u32
}

PayoutStarted

The stakers’ rewards are getting paid. Namespace
api.events.staking.PayoutStarted
Type
type PayoutStarted = {
  era_index: u32,
  validator_stash: SeedPrimitivesSignatureAccountId20
}

Rewarded

The nominator has been rewarded by this amount. Namespace
api.events.staking.Rewarded
Type
type Rewarded = {
  stash: SeedPrimitivesSignatureAccountId20,
  amount: u128
}

Slashed

One staker (and potentially its nominators) has been slashed by the given amount. Namespace
api.events.staking.Slashed
Type
type Slashed = {
  staker: SeedPrimitivesSignatureAccountId20,
  amount: u128
}

StakersElected

A new set of stakers was elected. Namespace
api.events.staking.StakersElected
Type
type StakersElected = {

}

StakingElectionFailed

The election failed. No new era is planned. Namespace
api.events.staking.StakingElectionFailed
Type
type StakingElectionFailed = {

}

Unbonded

An account has unbonded this amount. Namespace
api.events.staking.Unbonded
Type
type Unbonded = {
  stash: SeedPrimitivesSignatureAccountId20,
  amount: u128
}

ValidatorPrefsSet

A validator has set their preferences. Namespace
api.events.staking.ValidatorPrefsSet
Type
type ValidatorPrefsSet = {
  stash: SeedPrimitivesSignatureAccountId20,
  prefs: PalletStakingValidatorPrefs
}

Withdrawn

An account has called withdraw_unbonded and removed unbonding chunks worth Balance from the unlocking queue. Namespace
api.events.staking.Withdrawn
Type
type Withdrawn = {
  stash: SeedPrimitivesSignatureAccountId20,
  amount: u128
}

Errors

AlreadyBonded

Stash is already bonded. Namespace
api.errors.staking.AlreadyBonded

AlreadyClaimed

Rewards for this era have already been claimed for this validator. Namespace
api.errors.staking.AlreadyClaimed

AlreadyPaired

Controller is already paired. Namespace
api.errors.staking.AlreadyPaired

BadState

Internal state has become somehow corrupted and the operation cannot continue. Namespace
api.errors.staking.BadState

BadTarget

A nomination target was supplied that was blocked or otherwise not a validator. Namespace
api.errors.staking.BadTarget

BoundNotMet

Some bound is not met. Namespace
api.errors.staking.BoundNotMet

CannotChillOther

The user has enough bond and thus cannot be chilled forcefully by an external person. Namespace
api.errors.staking.CannotChillOther

CommissionTooLow

Commission is too low. Must be at least MinCommission. Namespace
api.errors.staking.CommissionTooLow

DuplicateIndex

Duplicate index. Namespace
api.errors.staking.DuplicateIndex

EmptyTargets

Targets cannot be empty. Namespace
api.errors.staking.EmptyTargets

FundedTarget

Attempting to target a stash that still has funds. Namespace
api.errors.staking.FundedTarget

IncorrectHistoryDepth

Incorrect previous history depth input provided. Namespace
api.errors.staking.IncorrectHistoryDepth

IncorrectSlashingSpans

Incorrect number of slashing spans provided. Namespace
api.errors.staking.IncorrectSlashingSpans

InsufficientBond

Cannot have a validator or nominator role, with value less than the minimum defined by governance (see MinValidatorBond and MinNominatorBond). If unbonding is the intention, chill first to remove one’s role as validator/nominator. Namespace
api.errors.staking.InsufficientBond

InvalidEraToReward

Invalid era to reward. Namespace
api.errors.staking.InvalidEraToReward

InvalidNumberOfNominations

Invalid number of nominations. Namespace
api.errors.staking.InvalidNumberOfNominations

InvalidSlashIndex

Slash record index out of bounds. Namespace
api.errors.staking.InvalidSlashIndex

NoMoreChunks

Can not schedule more unlock chunks. Namespace
api.errors.staking.NoMoreChunks

NotController

Not a controller account. Namespace
api.errors.staking.NotController

NotSortedAndUnique

Items are not sorted and unique. Namespace
api.errors.staking.NotSortedAndUnique

NotStash

Not a stash account. Namespace
api.errors.staking.NotStash

NoUnlockChunk

Can not rebond without unlocking chunks. Namespace
api.errors.staking.NoUnlockChunk

TooManyNominators

There are too many nominators in the system. Governance needs to adjust the staking settings to keep things safe for the runtime. Namespace
api.errors.staking.TooManyNominators

TooManyTargets

Too many nomination targets supplied. Namespace
api.errors.staking.TooManyTargets

TooManyValidators

There are too many validators in the system. Governance needs to adjust the staking settings to keep things safe for the runtime. Namespace
api.errors.staking.TooManyValidators

Constants

bondingDuration

Number of eras that staked funds must remain bonded for. Namespace
api.consts.staking.bondingDuration
Type
type bondingDuration = u32

historyDepth

Number of eras to keep in history. Following information is kept for eras in [current_era - HistoryDepth, current_era]: ErasStakers, ErasStakersClipped, ErasValidatorPrefs, ErasValidatorReward, ErasRewardPoints, ErasTotalStake, ErasStartSessionIndex, StakingLedger.claimed_rewards. Must be more than the number of eras delayed by session. I.e. active era must always be in history. I.e. active_era > current_era - history_depth must be guaranteed. If migrating an existing pallet from storage value to config value, this should be set to same value or greater as in storage. Note: HistoryDepth is used as the upper bound for the BoundedVec item StakingLedger.claimed_rewards. Setting this value lower than the existing value can lead to inconsistencies in the StakingLedger and will need to be handled properly in a migration. The test reducing_history_depth_abrupt shows this effect. Namespace
api.consts.staking.historyDepth
Type
type historyDepth = u32

maxNominations

Maximum number of nominations per nominator. Namespace
api.consts.staking.maxNominations
Type
type maxNominations = u32

maxNominatorRewardedPerValidator

The maximum number of nominators rewarded for each validator. For each validator only the $MaxNominatorRewardedPerValidator biggest stakers can claim their reward. This used to limit the i/o cost for the nominator payout. Namespace
api.consts.staking.maxNominatorRewardedPerValidator
Type
type maxNominatorRewardedPerValidator = u32

maxUnlockingChunks

The maximum number of unlocking chunks a [StakingLedger] can have. Effectively determines how many unique eras a staker may be unbonding in. Note: MaxUnlockingChunks is used as the upper bound for the BoundedVec item StakingLedger.unlocking. Setting this value lower than the existing value can lead to inconsistencies in the StakingLedger and will need to be handled properly in a runtime migration. The test reducing_max_unlocking_chunks_abrupt shows this effect. Namespace
api.consts.staking.maxUnlockingChunks
Type
type maxUnlockingChunks = u32

sessionsPerEra

Number of sessions per era. Namespace
api.consts.staking.sessionsPerEra
Type
type sessionsPerEra = u32

slashDeferDuration

Number of eras that slashes are deferred by, after computation. This should be less than the bonding duration. Set to 0 if slashes should be applied immediately, without opportunity for intervention. Namespace
api.consts.staking.slashDeferDuration
Type
type slashDeferDuration = u32