The default XCM version is 2 in the Integritee Parachain, and there hasn't been set an explicit XCM version for the relay chain destination, which lead to a `DestinationUnsupported` error when sending the slot swap request UMP of https://integritee.polkassembly.io/referendum/17. This proposal aims to set the XCM version to 3 when the relay chain is the destination. This call has been tested on Rococo, and it successfully resolved the issue.

Zondax team, known for maintaining Ledger apps for Polkadot, Kusama, Statemine, and Statemint, seeks funding from the treasury to continue their services. Their Ledger apps provide secure interaction with substrate chains using Ledger devices. The proposal includes ongoing maintenance, bug fixes, security audits, and project management for these Ledger apps. The budget covers development costs and third-party security audits, ensuring continuous compatibility and security.

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- The Integritee Parachain has a default XCM version of 2.
- There was an error when trying to send a slot swap request to the relay chain destination.
- This proposal suggests setting the XCM version to 3 for the relay chain destination.
- The proposal has been tested on Rococo and it fixed the issue.
- The proposal can be found at https://integritee.polkassembly.io/referendum/17.

Configure the relay chain XCM version to 3

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