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Enable view functions on System Chains (#981)
FRAME "View Functions" (paritytech/polkadot-sdk#216) support was implemented and released in Polkadot SDK with paritytech/polkadot-sdk#4722, but it was never exposed on the System Chains' runtimes. This PR adds the missing `execute_view_function()` to all System Chains' Runtime APIs.
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‎CHANGELOG.md‎

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@@ -6,6 +6,11 @@ The format is based on [Keep a Changelog](https://keepachangelog.com/en/1.0.0/).
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## [1.9.3] 21.10.2025
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### Added
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- Enable view functions on System Chains([polkadot-fellows/runtimes/pull/981](https://github.com/polkadot-fellows/runtimes/pull/981))
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## [1.9.3] 21.10.2025
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### Fixed
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- [BHP](https://github.com/polkadot-fellows/runtimes/pull/978) Add missing snowbridge runtime API to the BridgeHub

‎relay/kusama/src/lib.rs‎

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@@ -3032,6 +3032,15 @@ sp_api::impl_runtime_apis! {
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}
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}
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impl frame_support::view_functions::runtime_api::RuntimeViewFunction<Block> for Runtime {
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fn execute_view_function(
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id: frame_support::view_functions::ViewFunctionId,
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input: Vec<u8>
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) -> Result<Vec<u8>, frame_support::view_functions::ViewFunctionDispatchError> {
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Runtime::execute_view_function(id, input)
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}
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}
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impl frame_system_rpc_runtime_api::AccountNonceApi<Block, AccountId, Nonce> for Runtime {
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fn account_nonce(account: AccountId) -> Nonce {
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System::account_nonce(account)

‎relay/polkadot/src/lib.rs‎

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@@ -2780,6 +2780,15 @@ sp_api::impl_runtime_apis! {
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}
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}
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impl frame_support::view_functions::runtime_api::RuntimeViewFunction<Block> for Runtime {
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fn execute_view_function(
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id: frame_support::view_functions::ViewFunctionId,
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input: Vec<u8>
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) -> Result<Vec<u8>, frame_support::view_functions::ViewFunctionDispatchError> {
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Runtime::execute_view_function(id, input)
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}
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}
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impl frame_system_rpc_runtime_api::AccountNonceApi<Block, AccountId, Nonce> for Runtime {
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fn account_nonce(account: AccountId) -> Nonce {
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System::account_nonce(account)

‎system-parachains/asset-hubs/asset-hub-kusama/src/lib.rs‎

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@@ -2372,6 +2372,15 @@ pallet_revive::impl_runtime_apis_plus_revive!(
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}
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}
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impl frame_support::view_functions::runtime_api::RuntimeViewFunction<Block> for Runtime {
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fn execute_view_function(
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id: frame_support::view_functions::ViewFunctionId,
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input: Vec<u8>
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) -> Result<Vec<u8>, frame_support::view_functions::ViewFunctionDispatchError> {
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Runtime::execute_view_function(id, input)
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}
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}
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impl frame_system_rpc_runtime_api::AccountNonceApi<Block, AccountId, Nonce> for Runtime {
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fn account_nonce(account: AccountId) -> Nonce {
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System::account_nonce(account)

‎system-parachains/asset-hubs/asset-hub-polkadot/src/lib.rs‎

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@@ -2140,6 +2140,15 @@ impl_runtime_apis! {
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}
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}
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impl frame_support::view_functions::runtime_api::RuntimeViewFunction<Block> for Runtime {
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fn execute_view_function(
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id: frame_support::view_functions::ViewFunctionId,
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input: Vec<u8>
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) -> Result<Vec<u8>, frame_support::view_functions::ViewFunctionDispatchError> {
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Runtime::execute_view_function(id, input)
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}
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}
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impl frame_system_rpc_runtime_api::AccountNonceApi<Block, AccountId, Nonce> for Runtime {
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fn account_nonce(account: AccountId) -> Nonce {
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System::account_nonce(account)

‎system-parachains/bridge-hubs/bridge-hub-kusama/src/lib.rs‎

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@@ -1102,6 +1102,15 @@ impl_runtime_apis! {
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}
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}
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impl frame_support::view_functions::runtime_api::RuntimeViewFunction<Block> for Runtime {
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fn execute_view_function(
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id: frame_support::view_functions::ViewFunctionId,
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input: Vec<u8>
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) -> Result<Vec<u8>, frame_support::view_functions::ViewFunctionDispatchError> {
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Runtime::execute_view_function(id, input)
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}
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}
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impl frame_system_rpc_runtime_api::AccountNonceApi<Block, AccountId, Nonce> for Runtime {
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fn account_nonce(account: AccountId) -> Nonce {
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System::account_nonce(account)

‎system-parachains/bridge-hubs/bridge-hub-polkadot/src/lib.rs‎

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@@ -1175,6 +1175,15 @@ impl_runtime_apis! {
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}
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}
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impl frame_support::view_functions::runtime_api::RuntimeViewFunction<Block> for Runtime {
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fn execute_view_function(
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id: frame_support::view_functions::ViewFunctionId,
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input: Vec<u8>
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) -> Result<Vec<u8>, frame_support::view_functions::ViewFunctionDispatchError> {
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Runtime::execute_view_function(id, input)
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}
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}
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impl frame_system_rpc_runtime_api::AccountNonceApi<Block, AccountId, Nonce> for Runtime {
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fn account_nonce(account: AccountId) -> Nonce {
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System::account_nonce(account)

‎system-parachains/collectives/collectives-polkadot/src/lib.rs‎

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@@ -1205,6 +1205,15 @@ impl_runtime_apis! {
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}
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}
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impl frame_support::view_functions::runtime_api::RuntimeViewFunction<Block> for Runtime {
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fn execute_view_function(
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id: frame_support::view_functions::ViewFunctionId,
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input: Vec<u8>
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) -> Result<Vec<u8>, frame_support::view_functions::ViewFunctionDispatchError> {
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Runtime::execute_view_function(id, input)
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}
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}
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impl frame_system_rpc_runtime_api::AccountNonceApi<Block, AccountId, Nonce> for Runtime {
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fn account_nonce(account: AccountId) -> Nonce {
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System::account_nonce(account)

‎system-parachains/coretime/coretime-kusama/src/lib.rs‎

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@@ -1025,6 +1025,15 @@ impl_runtime_apis! {
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}
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}
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impl frame_support::view_functions::runtime_api::RuntimeViewFunction<Block> for Runtime {
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fn execute_view_function(
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id: frame_support::view_functions::ViewFunctionId,
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input: Vec<u8>
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) -> Result<Vec<u8>, frame_support::view_functions::ViewFunctionDispatchError> {
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Runtime::execute_view_function(id, input)
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}
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}
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impl frame_system_rpc_runtime_api::AccountNonceApi<Block, AccountId, Nonce> for Runtime {
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fn account_nonce(account: AccountId) -> Nonce {
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System::account_nonce(account)

‎system-parachains/coretime/coretime-polkadot/src/lib.rs‎

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@@ -1037,6 +1037,15 @@ impl_runtime_apis! {
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}
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}
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impl frame_support::view_functions::runtime_api::RuntimeViewFunction<Block> for Runtime {
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fn execute_view_function(
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id: frame_support::view_functions::ViewFunctionId,
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input: Vec<u8>
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) -> Result<Vec<u8>, frame_support::view_functions::ViewFunctionDispatchError> {
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Runtime::execute_view_function(id, input)
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}
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}
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impl frame_system_rpc_runtime_api::AccountNonceApi<Block, AccountId, Nonce> for Runtime {
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fn account_nonce(account: AccountId) -> Nonce {
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System::account_nonce(account)

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