# Polkadot Release Analysis v0.9.43 **URL:** \ **Category:** Ecosystem\ **Tags:** release-analysis\ **Created:** [June 20, 2023, 3:59pm UTC](https://forum.polkadot.network/t/polkadot-release-analysis-v0-9-43/3158 "2023-06-20T15:59:20Z")\ **Posts on this page:** 1\ **Showing post:** 3
**Author:** ![hectorb](https://dub1.discourse-cdn.com/flex005/user_avatar/forum.polkadot.network/hectorb/32/729_2.png) [@hectorb](https://forum.polkadot.network/u/hectorb)\ **Post date:** [June 21, 2023, 8:51am UTC](https://forum.polkadot.network/t/polkadot-release-analysis-v0-9-43/3158/3 "2023-06-21T08:51:19Z")
Appendix: # Remove the `Copy` bound on `AssetId` PR: [https://github.com/paritytech/substrate/pull/14158](https://github.com/paritytech/substrate/pull/14158) Related: [Make `AssetId` and `MultiLocation` non-`Copy`; make `Instruction` 92% smaller by koute · Pull Request #7236 · paritytech/polkadot · GitHub](https://github.com/paritytech/polkadot/pull/7236) This PR is removing the Copy trait from the `AssetId` type due to size optimization in XCM messages. Please be mindful about this change since it will have many implications in pallets relying on traits like the `Inspect` for example. ```auto error[E0382]: use of moved value: `asset_id` | 93 | ensure!(T::Assets::asset_exists(asset_id), Error::::AssetDoesNotExist); | -------- value moved here ... 97 | !AssetIdMultiLocation::::contains_key(asset_id), | ^^^^^^^^ value used here after move | = note: move occurs because `asset_id` has type `<::Assets as frame_support::traits::fungibles::Inspect<::AccountId>>::AssetId`, which does not implement the `Copy` trait ``` As it is mentioned in [Make `AssetId` and `MultiLocation` non-`Copy`; make `Instruction` 92% smaller by koute · Pull Request #7236 · paritytech/polkadot · GitHub](https://github.com/paritytech/polkadot/pull/7236), now those values have to be `clone()`d --- _[View the full topic](https://forum.polkadot.network/t/polkadot-release-analysis-v0-9-43/3158)._