## Background
https://acala.discourse.group/t/acala-risk-parameter-change-proposal-may-2023/2096

## Proposal
The following suggestion is proposed to optimize for risk management for Acala.

+ Decrease Debt Ceiling of DOT from 50M to 20M
+ Decrease Debt Ceiling of LDOT from 5M to 2M
+ Decrease Debt Ceiling of LCDOT from 6M to 2M
+ Decrease Debt Ceiling of ACA from 6M to 1.5M

Risk parameters are best adjusted according to market conditions to balance insolvencies, liquidations, and capital efficiency. A lower debt ceiling helps mitigate the risk associated with excessive debt exposure and enable the protocol to remain solvent and resilient in volatile market conditions.



Acala Risk Parameter Change Proposal - May 2023

Untitled - motion #82

https://acala.discourse.group/t/proposals-to-fix-problems-caused-by-a-special-case-handling-issue-in-taiga-stable-asset-pallet-on-acala/2080/10?u=xlc

Resume full functionality of Taiga stable asset pallet on Acala

This is a runtime upgrade for Acala that fixes issue for Taiga stable asset pallet.

Release note: https://github.com/AcalaNetwork/Acala/releases/tag/2.17.0 

Runtime upgrade to fix Taipa stable asset pallet

https://acala.discourse.group/t/proposal-1-to-fix-problems-caused-by-a-special-case-handling-issue-in-taiga-stable-asset-pallet-on-acala/2080

Proposal 1 to fix problems caused by a special case handling issue in Taiga stable asset pallet on Acala

[Referenda #58](https://acala.subsquare.io/democracy/referendum/58) failed to dispatch due to missing EVM origin in governance triggered call issue. This one attempt to resubmit the proposal but using `authority.authorizeCall` to wrap the original proposal to avoid the missing EVM origin issue.

Proposal to refund stuck DAI due to EVM via XCM issue (2nd attmpt)

## Summary
This is a full release for Acala & Karura that upgrades Substrate/Polkadot/Cumulus version to v0.9.33 and fix an issue about XCM transfer ERC20.

Release Note: https://github.com/AcalaNetwork/Acala/releases/tag/2.12.0

# Referendum
https://acala.subscan.io/referenda/57
https://acala.subsquare.io/democracy/referendum/57

#57 Runtime Upgrade - Upgrade Substrate/Polkadot/Cumulus to v0.9.33 and bug fixes

https://acala.discourse.group/t/gauntlet-risk-parameter-recommendation-12-20-2022/1975

Gauntlet Risk Parameter Recommendation (12/20/2022)

# Summary
This is a full release for Acala & Karura that upgrades Substrate/Polkadot/Cumulus version to v0.9.31 and implemented sanity checks for some parameter updates.

Release Note: https://github.com/AcalaNetwork/Acala/releases/tag/2.11.0
# Referendum
https://acala.subscan.io/referenda/52
https://acala.subsquare.io/democracy/referendum/52

#52 Runtime Upgrade - Upgrade Substrate/Polkadot/Cumulus version v0.9.31

https://acala.discourse.group/t/gauntlet-risk-parameter-recommendation-12-13-2022/1970

Gauntlet Risk Parameter Recommendation (12/13/2022)

https://acala.discourse.group/t/gauntlet-risk-parameter-recommendation-12-5-2022/1967

Gauntlet Risk Parameter Recommendation (12/5/2022)

https://acala.discourse.group/t/gauntlet-risk-parameter-recommendation-11-29-2022/1964

Gauntlet Risk Parameter Recommendation (11/29/2022) 

https://acala.discourse.group/t/gauntlet-risk-parameter-recommendation-11-21-2022/1961/1

Gauntlet Risk Parameter Recommendation (11/21/2022)

https://acala.discourse.group/t/gauntlet-risk-parameter-recommendation-11-14-2022/1953

Gauntlet Risk Parameter Recommendation (11/14/2022)

Untitled - motion #69

This proposal will update auction collateral size limit as
10,000 ACA
1,000 DOT
1,200 LcDOT
5,000 LDOT
to reduce liquidation impact in response to current volatile market conditions.

Update auction collateral size limit.

https://acala.discourse.group/t/gauntlet-risk-parameter-recommendation-11-07-2022/1933

Gauntlet Risk Parameter Recommendation (11/07/2022)

# Summary

This is a runtime release for Acala that improves security and correct incentive related onchain state.

Release Note: https://github.com/AcalaNetwork/Acala/releases/tag/2.10.1

# Referendum

* https://acala.subscan.io/referenda/42
* https://acala.subsquare.io/democracy/referendum/42

#42 Runtime upgrade - fixes and improvements

https://acala.discourse.group/t/gauntlet-risk-parameter-recommendation-11-01-2022/1929/1

Gauntlet Risk Parameter Recommendation (11/01/2022)

https://acala.discourse.group/t/gauntlet-risk-parameter-recommendation-10-14-2022/1919

Gauntlet Risk Parameter Recommendation (10/14/2022)

This proposes a reset of the schedulers affected by previous [runtime upgrade](https://acala.subsquare.io/democracy/referendum/32) that removed dex saving code. 


Reset schedulers after dex saving removed

This proposes an upgrade of the Acala Runtime to fix a critical security vulnerability that was reported to Parity.

Proposal hash: 0x71860be879125b742eec6cde2802c08f655e1ce64c58276a8c58afff7a631e90
Ecoded: 0x1e02947955583e688e616a8dbd1b8471a9b83ae546ce4471e83a8cb0f9a7fe0b4226

Release:
https://github.com/AcalaNetwork/Acala/releases/tag/2.9.5-acala

This needs to be expedited for its criticality.


Acala Runtime Upgrade 

https://acala.discourse.group/t/proposal-1-for-trace-result-4-aug-19-2022/1387/30