With [referendum 280](https://polkadot.polkassembly.io/referenda/280) Composable Finance and Zeitgeist have successfully requested opening a channel between their respective parachain and AssetHub. The active runtime during opening the channels was polkadot-runtime v1.0.1. In this runtime, [polkadot-runtime-parachains v2.0.0](https://github.com/polkadot-fellows/runtimes/blob/v1.0.1/Cargo.lock#L8013-L8014) is used. This crate contains the code to manage hrmp channels. [In version v2.0.0](https://docs.rs/crate/polkadot-runtime-parachains/2.0.0/source/src/hrmp.rs), in any case it is required that both parachains that are involved in the channel opening process provide a deposit. Thus, to open channels between AssetHub and Composable Finance and AssetHub and Zeitgeist, it was required to provide the channel opening and acceptance deposits to the AssetHub parachain sovereign account on Polkadot. You can see that [Composable Finance have transferred 20 DOT](https://polkadot.subscan.io/extrinsic/18376702-2) to the parachain sovereign account of AssetHub and [Zeitgeist also have transferred 20 DOT](https://polkadot.subscan.io/extrinsic/18376860-2) to the parachain sovereign account of AssetHub as well.

Before OpenGov was activated, hrmp channel openings to system chains involved funding the system chain's sovereign account from the treasury, as can be seen [in an old GoV1 referendum](https://polkadot.polkassembly.io/referendum/123). Furthermore, a later version of the [polkadot-runtime-parachains crate](https://github.com/paritytech/polkadot-sdk/blob/v1.4.0/polkadot/runtime/parachains/src/hrmp.rs#L1426) does also contain the logic to relieve the requesting entity of providing the channel deposit fees for the system chain. Consequently, right now we are in a transitory state where the general admin track can be used to request opening HMRP channels with system chains, but the cost of the channel deposits have to be provided by the requesting entity as the general admin track cannot control funds of the treasury.

- **Problem Statement:** 
  - Opening channels between parachains and AssetHub requires deposits from both parachains, impacting Composable Finance and Zeitgeist.

- **Significance:** 
  - Previously, funding for hrmp channel openings to system chains came from the treasury, but now requesting entities must provide channel deposit fees.

- **Proposed Solution:** 
  - Requesting entities like Composable Finance and Zeitgeist need to provide channel deposit fees for opening HMRP channels with system chains.

- **Expected Outcomes:** 
  - Transition to a transitory state where the general admin track can facilitate opening HMRP channels with system chains, but requesting entities must cover the channel deposit costs.

#560 Reimburse AssetHub HRMP channel deposit

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