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I was following this example of ink! upgradable smart contract. After I uploaded the upgradable_contract.contract (Step 4 in the link), I got the following error: How can I fix it?

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CodeRejected means that your contract is using some stuff that is not supported by the contract-pallet.

In your case, seal_delegate_call is an unstable function at the moment, and it is disabled by default. To enable it you need to build the node with pallet-contracts/unstable-interface feature. Or you can use substrate-contracts-node, it is enabled there.

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  • I used the substrate-contracts-node but the same thing happened
    – Minh Mốc
    Mar 11, 2022 at 11:55
  • Are you sure that it was the latest substrate-contracts-node? Because error means that you are using the functions in the code that is not available
    – Green Baneling
    Mar 13, 2022 at 7:21

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