Submitted by T1MOH, also found by Chom and UniversalCrypto
Axelar is supposed to support different chains, not only EVM. And these chains can have a different address standard like Polkadot or Tron. These addresses cant be whitelisted in InterchainProposalExecutor.sol to execute proposal. Thus, InterchainProposalSender implementation from non-EMV chain cant interact with InterchainProposalExecutor.sol on the EVM chain.
Here, you can see that sourceAddress is represented as address, not string:
Dont convert sourceAddress to address, use string instead.
Invalid Validation
deanamiel (Axelar) confirmed and commented:
