Pallet errors are not visible anywhere when submitted via XCM Transact

[haerdib]

When submitting a transaction via the XCM Transact, errors happening within the relevant pallet are not shown anywhere:

polkadot/xcm/xcm-executor/src/lib.rs

Lines 347 to 353 in 9428d8c

	let actual_weight = match message_call.dispatch(dispatch_origin) {
	Ok(post_info) => post_info.actual_weight,
	Err(error_and_info) => {
	// Not much to do with the result as it is. It's up to the parachain to ensure that the
	// message makes sense.
	error_and_info.post_info.actual_weight
	},

XCM Logs will simply report an xcm::execute_xcm_in_credit: result: Ok(()) even if the pallet call has failed. This makes it very hard to debug.

It would be very helpful if the error returned by the pallet would at least be logged somewhere. Or even more preferable: If the XCM execution would not result in an Ok(()), but in an Error instead… or an Ok with a corresponding error message in it, such that one can debug from the parachain side.

[dzmitry-lahoda]

is seems in progress with v3 paritytech/polkadot-sdk#887

[haerdib]

Yes, that's it. Thanks a lot :)