Assets pallet

Derived from live runtime metadata on TRN root (pallet index 6, captured 2026-05-02). For prose-style documentation see Assets on the curated reference side.

Pallet index

6

Calls

32

Events

24

Errors

20

Storage items

4

Constants

7

Calls (extrinsics)

Assets.create

See [Pallet::create].

api.tx.assets.create(id: u32, admin: [u8;20], min_balance: u128)

Argument	Type	Doc
id	u32	T::AssetIdParameter
admin	[u8;20]	AccountIdLookupOf<T>
min_balance	u128	T::Balance

Call index: 0

Assets.force_create

See [Pallet::force_create].

api.tx.assets.force_create(id: u32, owner: [u8;20], is_sufficient: bool, min_balance: Compact<u128>)

Argument	Type	Doc
id	u32	T::AssetIdParameter
owner	[u8;20]	AccountIdLookupOf<T>
is_sufficient	bool	bool
min_balance	Compact&lt;u128&gt;	T::Balance

Call index: 1

Assets.start_destroy

See [Pallet::start_destroy].

api.tx.assets.start_destroy(id: u32)

Argument	Type	Doc
id	u32	T::AssetIdParameter

Call index: 2

Assets.destroy_accounts

See [Pallet::destroy_accounts].

api.tx.assets.destroy_accounts(id: u32)

Argument	Type	Doc
id	u32	T::AssetIdParameter

Call index: 3

Assets.destroy_approvals

See [Pallet::destroy_approvals].

api.tx.assets.destroy_approvals(id: u32)

Argument	Type	Doc
id	u32	T::AssetIdParameter

Call index: 4

Assets.finish_destroy

See [Pallet::finish_destroy].

api.tx.assets.finish_destroy(id: u32)

Argument	Type	Doc
id	u32	T::AssetIdParameter

Call index: 5

Assets.mint

See [Pallet::mint].

api.tx.assets.mint(id: u32, beneficiary: [u8;20], amount: Compact<u128>)

Argument	Type	Doc
id	u32	T::AssetIdParameter
beneficiary	[u8;20]	AccountIdLookupOf<T>
amount	Compact&lt;u128&gt;	T::Balance

Call index: 6

Assets.burn

See [Pallet::burn].

api.tx.assets.burn(id: u32, who: [u8;20], amount: Compact<u128>)

Argument	Type	Doc
id	u32	T::AssetIdParameter
who	[u8;20]	AccountIdLookupOf<T>
amount	Compact&lt;u128&gt;	T::Balance

Call index: 7

Assets.transfer

See [Pallet::transfer].

api.tx.assets.transfer(id: u32, target: [u8;20], amount: Compact<u128>)

Argument	Type	Doc
id	u32	T::AssetIdParameter
target	[u8;20]	AccountIdLookupOf<T>
amount	Compact&lt;u128&gt;	T::Balance

Call index: 8

Assets.transfer_keep_alive

See [Pallet::transfer_keep_alive].

api.tx.assets.transfer_keep_alive(id: u32, target: [u8;20], amount: Compact<u128>)

Argument	Type	Doc
id	u32	T::AssetIdParameter
target	[u8;20]	AccountIdLookupOf<T>
amount	Compact&lt;u128&gt;	T::Balance

Call index: 9

Assets.force_transfer

See [Pallet::force_transfer].

api.tx.assets.force_transfer(id: u32, source: [u8;20], dest: [u8;20], amount: Compact<u128>)

Argument	Type	Doc
id	u32	T::AssetIdParameter
source	[u8;20]	AccountIdLookupOf<T>
dest	[u8;20]	AccountIdLookupOf<T>
amount	Compact&lt;u128&gt;	T::Balance

Call index: 10

Assets.freeze

See [Pallet::freeze].

api.tx.assets.freeze(id: u32, who: [u8;20])

Argument	Type	Doc
id	u32	T::AssetIdParameter
who	[u8;20]	AccountIdLookupOf<T>

Call index: 11

Assets.thaw

See [Pallet::thaw].

api.tx.assets.thaw(id: u32, who: [u8;20])

Argument	Type	Doc
id	u32	T::AssetIdParameter
who	[u8;20]	AccountIdLookupOf<T>

Call index: 12

Assets.freeze_asset

See [Pallet::freeze_asset].

api.tx.assets.freeze_asset(id: u32)

Argument	Type	Doc
id	u32	T::AssetIdParameter

Call index: 13

Assets.thaw_asset

See [Pallet::thaw_asset].

api.tx.assets.thaw_asset(id: u32)

Argument	Type	Doc
id	u32	T::AssetIdParameter

Call index: 14

Assets.transfer_ownership

See [Pallet::transfer_ownership].

api.tx.assets.transfer_ownership(id: u32, owner: [u8;20])

Argument	Type	Doc
id	u32	T::AssetIdParameter
owner	[u8;20]	AccountIdLookupOf<T>

Call index: 15

Assets.set_team

See [Pallet::set_team].

api.tx.assets.set_team(id: u32, issuer: [u8;20], admin: [u8;20], freezer: [u8;20])

Argument	Type	Doc
id	u32	T::AssetIdParameter
issuer	[u8;20]	AccountIdLookupOf<T>
admin	[u8;20]	AccountIdLookupOf<T>
freezer	[u8;20]	AccountIdLookupOf<T>

Call index: 16

Assets.set_metadata

See [Pallet::set_metadata].

api.tx.assets.set_metadata(id: u32, name: Bytes, symbol: Bytes, decimals: u8)

Argument	Type	Doc
id	u32	T::AssetIdParameter
name	Bytes	Vec<u8>
symbol	Bytes	Vec<u8>
decimals	u8	u8

Call index: 17

Assets.clear_metadata

See [Pallet::clear_metadata].

api.tx.assets.clear_metadata(id: u32)

Argument	Type	Doc
id	u32	T::AssetIdParameter

Call index: 18

Assets.force_set_metadata

See [Pallet::force_set_metadata].

api.tx.assets.force_set_metadata(id: u32, name: Bytes, symbol: Bytes, decimals: u8, is_frozen: bool)

Argument	Type	Doc
id	u32	T::AssetIdParameter
name	Bytes	Vec<u8>
symbol	Bytes	Vec<u8>
decimals	u8	u8
is_frozen	bool	bool

Call index: 19

Assets.force_clear_metadata

See [Pallet::force_clear_metadata].

api.tx.assets.force_clear_metadata(id: u32)

Argument	Type	Doc
id	u32	T::AssetIdParameter

Call index: 20

Assets.force_asset_status

See [Pallet::force_asset_status].

api.tx.assets.force_asset_status(id: u32, owner: [u8;20], issuer: [u8;20], admin: [u8;20], freezer: [u8;20], min_balance: Compact<u128>, is_sufficient: bool, is_frozen: bool)

Argument	Type	Doc
id	u32	T::AssetIdParameter
owner	[u8;20]	AccountIdLookupOf<T>
issuer	[u8;20]	AccountIdLookupOf<T>
admin	[u8;20]	AccountIdLookupOf<T>
freezer	[u8;20]	AccountIdLookupOf<T>
min_balance	Compact&lt;u128&gt;	T::Balance
is_sufficient	bool	bool
is_frozen	bool	bool

Call index: 21

Assets.approve_transfer

See [Pallet::approve_transfer].

api.tx.assets.approve_transfer(id: u32, delegate: [u8;20], amount: Compact<u128>)

Argument	Type	Doc
id	u32	T::AssetIdParameter
delegate	[u8;20]	AccountIdLookupOf<T>
amount	Compact&lt;u128&gt;	T::Balance

Call index: 22

Assets.cancel_approval

See [Pallet::cancel_approval].

api.tx.assets.cancel_approval(id: u32, delegate: [u8;20])

Argument	Type	Doc
id	u32	T::AssetIdParameter
delegate	[u8;20]	AccountIdLookupOf<T>

Call index: 23

Assets.force_cancel_approval

See [Pallet::force_cancel_approval].

api.tx.assets.force_cancel_approval(id: u32, owner: [u8;20], delegate: [u8;20])

Argument	Type	Doc
id	u32	T::AssetIdParameter
owner	[u8;20]	AccountIdLookupOf<T>
delegate	[u8;20]	AccountIdLookupOf<T>

Call index: 24

Assets.transfer_approved

See [Pallet::transfer_approved].

api.tx.assets.transfer_approved(id: u32, owner: [u8;20], destination: [u8;20], amount: Compact<u128>)

Argument	Type	Doc
id	u32	T::AssetIdParameter
owner	[u8;20]	AccountIdLookupOf<T>
destination	[u8;20]	AccountIdLookupOf<T>
amount	Compact&lt;u128&gt;	T::Balance

Call index: 25

Assets.touch

See [Pallet::touch].

api.tx.assets.touch(id: u32)

Argument	Type	Doc
id	u32	T::AssetIdParameter

Call index: 26

Assets.refund

See [Pallet::refund].

api.tx.assets.refund(id: u32, allow_burn: bool)

Argument	Type	Doc
id	u32	T::AssetIdParameter
allow_burn	bool	bool

Call index: 27

Assets.set_min_balance

See [Pallet::set_min_balance].

api.tx.assets.set_min_balance(id: u32, min_balance: u128)

Argument	Type	Doc
id	u32	T::AssetIdParameter
min_balance	u128	T::Balance

Call index: 28

Assets.touch_other

See [Pallet::touch_other].

api.tx.assets.touch_other(id: u32, who: [u8;20])

Argument	Type	Doc
id	u32	T::AssetIdParameter
who	[u8;20]	AccountIdLookupOf<T>

Call index: 29

Assets.refund_other

See [Pallet::refund_other].

api.tx.assets.refund_other(id: u32, who: [u8;20])

Argument	Type	Doc
id	u32	T::AssetIdParameter
who	[u8;20]	AccountIdLookupOf<T>

Call index: 30

Assets.block

See [Pallet::block].

api.tx.assets.block(id: u32, who: [u8;20])

Argument	Type	Doc
id	u32	T::AssetIdParameter
who	[u8;20]	AccountIdLookupOf<T>

Call index: 31

Events

Assets.Created

Some asset class was created.

Field	Type	Doc
asset_id	u32
creator	[u8;20]
owner	[u8;20]

Assets.Issued

Some assets were issued.

Field	Type	Doc
asset_id	u32
owner	[u8;20]
amount	u128

Assets.Transferred

Some assets were transferred.

Field	Type	Doc
asset_id	u32
from	[u8;20]
to	[u8;20]
amount	u128

Assets.Burned

Some assets were destroyed.

Field	Type	Doc
asset_id	u32
owner	[u8;20]
balance	u128

Assets.TeamChanged

The management team changed.

Field	Type	Doc
asset_id	u32
issuer	[u8;20]
admin	[u8;20]
freezer	[u8;20]

Assets.OwnerChanged

The owner changed.

Field	Type	Doc
asset_id	u32
owner	[u8;20]

Assets.Frozen

Some account who was frozen.

Field	Type	Doc
asset_id	u32
who	[u8;20]

Assets.Thawed

Some account who was thawed.

Field	Type	Doc
asset_id	u32
who	[u8;20]

Assets.AssetFrozen

Some asset asset_id was frozen.

Field	Type	Doc
asset_id	u32

Assets.AssetThawed

Some asset asset_id was thawed.

Field	Type	Doc
asset_id	u32

Assets.AccountsDestroyed

Accounts were destroyed for given asset.

Field	Type	Doc
asset_id	u32
accounts_destroyed	u32
accounts_remaining	u32

Assets.ApprovalsDestroyed

Approvals were destroyed for given asset.

Field	Type	Doc
asset_id	u32
approvals_destroyed	u32
approvals_remaining	u32

Assets.DestructionStarted

An asset class is in the process of being destroyed.

Field	Type	Doc
asset_id	u32

Assets.Destroyed

An asset class was destroyed.

Field	Type	Doc
asset_id	u32

Assets.ForceCreated

Some asset class was force-created.

Field	Type	Doc
asset_id	u32
owner	[u8;20]

Assets.MetadataSet

New metadata has been set for an asset.

Field	Type	Doc
asset_id	u32
name	Bytes
symbol	Bytes
decimals	u8
is_frozen	bool

Assets.MetadataCleared

Metadata has been cleared for an asset.

Field	Type	Doc
asset_id	u32

Assets.ApprovedTransfer

(Additional) funds have been approved for transfer to a destination account.

Field	Type	Doc
asset_id	u32
source	[u8;20]
delegate	[u8;20]
amount	u128

Assets.ApprovalCancelled

An approval for account delegate was cancelled by owner.

Field	Type	Doc
asset_id	u32
owner	[u8;20]
delegate	[u8;20]

Assets.TransferredApproved

An amount was transferred in its entirety from owner to destination by the approved delegate.

Field	Type	Doc
asset_id	u32
owner	[u8;20]
delegate	[u8;20]
destination	[u8;20]
amount	u128

Assets.AssetStatusChanged

An asset has had its attributes changed by the Force origin.

Field	Type	Doc
asset_id	u32

Assets.AssetMinBalanceChanged

The min_balance of an asset has been updated by the asset owner.

Field	Type	Doc
asset_id	u32
new_min_balance	u128

Assets.Touched

Some account who was created with a deposit from depositor.

Field	Type	Doc
asset_id	u32
who	[u8;20]
depositor	[u8;20]

Assets.Blocked

Some account who was blocked.

Field	Type	Doc
asset_id	u32
who	[u8;20]

Errors

Assets.BalanceLow

Account balance must be greater than or equal to the transfer amount.

Assets.NoAccount

The account to alter does not exist.

Assets.NoPermission

The signing account has no permission to do the operation.

Assets.Unknown

The given asset ID is unknown.

Assets.Frozen

The origin account is frozen.

Assets.InUse

The asset ID is already taken.

Assets.BadWitness

Invalid witness data given.

Assets.MinBalanceZero

Minimum balance should be non-zero.

Assets.UnavailableConsumer

Unable to increment the consumer reference counters on the account. Either no provider reference exists to allow a non-zero balance of a non-self-sufficient asset, or one fewer then the maximum number of consumers has been reached.

Assets.BadMetadata

Invalid metadata given.

Assets.Unapproved

No approval exists that would allow the transfer.

Assets.WouldDie

The source account would not survive the transfer and it needs to stay alive.

Assets.AlreadyExists

The asset-account already exists.

Assets.NoDeposit

The asset-account doesn't have an associated deposit.

Assets.WouldBurn

The operation would result in funds being burned.

Assets.LiveAsset

The asset is a live asset and is actively being used. Usually emit for operations such as start_destroy which require the asset to be in a destroying state.

Assets.AssetNotLive

The asset is not live, and likely being destroyed.

Assets.IncorrectStatus

The asset status is not the expected status.

Assets.NotFrozen

The asset should be frozen before the given operation.

Assets.CallbackFailed

Callback action resulted in error

Storage

Assets.Asset

Details of an asset.

await api.query.assets.asset(key1)

• Key: u32 (hasher: Blake2_128Concat)
• Returns: {"owner":"SeedPrimitivesSignatureAccountId20","issuer":"SeedPrimitivesSignatureAccountId20","admin":"SeedPrimitivesSignatureAccountId20","freezer":"SeedPrimitivesSignatureAccountId20","supply":"u128","deposit":"u128","minBalance":"u128","isSufficient":"bool","accounts":"u32","sufficients":"u32","approvals":"u32","status":"PalletAssetsAssetStatus"}

Modifier: Optional

Assets.Account

The holdings of a specific account for a specific asset.

await api.query.assets.account(key1, key2)

• Key: (u32,SeedPrimitivesSignatureAccountId20) (hashers: Blake2_128Concat, Blake2_128Concat)
• Returns: {"balance":"u128","status":"PalletAssetsAccountStatus","reason":"PalletAssetsExistenceReason","extra":"Null"}

Modifier: Optional

Assets.Approvals

Approved balance transfers. First balance is the amount approved for transfer. Second is the amount of T::Currency reserved for storing this. First key is the asset ID, second key is the owner and third key is the delegate.

await api.query.assets.approvals(key1, key2, key3)

• Key: (u32,SeedPrimitivesSignatureAccountId20,SeedPrimitivesSignatureAccountId20) (hashers: Blake2_128Concat, Blake2_128Concat, Blake2_128Concat)
• Returns: {"amount":"u128","deposit":"u128"}

Modifier: Optional

Assets.Metadata

Metadata of an asset.

await api.query.assets.metadata(key1)

• Key: u32 (hasher: Blake2_128Concat)
• Returns: {"deposit":"u128","name":"Bytes","symbol":"Bytes","decimals":"u8","isFrozen":"bool"}

Modifier: Default

Constants

Assets.RemoveItemsLimit

Max number of items to destroy per destroy_accounts and destroy_approvals call. Must be configured to result in a weight that makes each call fit in a block.

Type: u32
SCALE-encoded value: 0x64000000

Assets.AssetDeposit

The basic amount of funds that must be reserved for an asset.

Type: u128
SCALE-encoded value: 0x40420f00000000000000000000000000

Assets.AssetAccountDeposit

The amount of funds that must be reserved for a non-provider asset account to be maintained.

Type: u128
SCALE-encoded value: 0x10000000000000000000000000000000

Assets.MetadataDepositBase

The basic amount of funds that must be reserved when adding metadata to your asset.

Type: u128
SCALE-encoded value: 0x44000000000000000000000000000000

Assets.MetadataDepositPerByte

The additional funds that must be reserved for the number of bytes you store in your metadata.

Type: u128
SCALE-encoded value: 0x01000000000000000000000000000000

Assets.ApprovalDeposit

The amount of funds that must be reserved when creating a new approval.

Type: u128
SCALE-encoded value: 0x01000000000000000000000000000000

Assets.StringLimit

The maximum length of a name or symbol stored on-chain.

Type: u32
SCALE-encoded value: 0x32000000

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