pr_3749.prdoc

# Schema: Polkadot SDK PRDoc Schema (prdoc) v1.0.0
# See doc at https://raw.githubusercontent.com/paritytech/polkadot-sdk/master/prdoc/schema_user.json

title: "pallet-xcm: deprecate execute and send in favor of execute_blob and send_blob"

doc:
  - audience: Runtime Dev
    description: |
      pallet-xcm's extrinsics `execute` and `send` have been marked as deprecated.
      Please change their usage to the new `execute_blob` and `send_blob`.
      The migration from the old extrinsic to the new is very simple.
      If you have your message `xcm: VersionedXcm<Call>`, then instead of passing in
      `Box::new(xcm)` to both `execute` and `send`, you would pass in
      `xcm.encode().try_into()` and handle the potential error of its encoded length
      being bigger than `MAX_XCM_ENCODED_SIZE`.
  - audience: Runtime User
    description: |
      pallet-xcm has a new pair of extrinsics, `execute_blob` and `send_blob`.
      These are meant to be used instead of `execute` and `send`, which are now deprecated
      and will be removed eventually.
      These new extrinsics just require you to input the encoded XCM.
      There's a new utility in PolkadotJS Apps for encoding XCMs you can use:
      https://polkadot.js.org/apps/#/utilities/xcm
      Just pass in the encoded XCM to the new extrinsics and you're done.

crates:
- name: pallet-xcm
- name: staging-xcm
- name: staging-xcm-builder
- name: pallet-contracts
- name: asset-hub-rococo-runtime
- name: asset-hub-westend-runtime
- name: bridge-hub-rococo-runtime
- name: bridge-hub-westend-runtime
- name: collectives-westend-runtime
- name: coretime-rococo-runtime
- name: coretime-westend-runtime
- name: people-rococo-runtime
- name: people-westend-runtime
- name: rococo-runtime
- name: westend-runtime