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Here is my call:

https://crab-parachain.subscan.io/extrinsic/284069-2

With the same params, I can send the message to Rococo through XCM.

The error's description is:

/// There was some other issue (i.e. not to do with routing) in sending the 
message. Perhaps
/// a lack of space for buffering the message.

So, what the other issue could be? And I don't have too much knowledge about the lack of space for buffering the message. What does that mean?

Btw, I'm on polkadot-v0.9.16.

1 Answer 1

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I don't know why the SafeXCMVersion is empty. I have already set it in the genesis.

Never mind, use force_xcm_version and force_default_xcm_version to fix this.

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