[General] Paymaster - Violated validation rules: Touched disallowed storage

[Enghin84]

Team or Project

openzk

ZK chain

openzk-testnet (https://openzk-testnet.rpc.caldera.xyz/http/)

Environment

Testnet

L2 block number

No response

Provide a brief description of the functionality you're trying to implement and the issue you are running into.

I'm trying to send a transaction which uses a custom paymaster I deployed following the MyPaymaster contract from here: https://code.zksync.io/tutorials/erc20-paymaster
I get this error: failed to validate the transaction. reason: Violated validation rules: Touched disallowed storage slots: address 000000000000000000000000000000000000800b, key: 1
I checked the erc20 balances, the paymaster eth balance...all are fine. Am I missing something here?

Code snippet that sends the transaction:

const paymasterParams = utils.getPaymasterParams(this.cryptoConfig.l2PaymasterContractAddress, {
          type: 'ApprovalBased',
          token: this.cryptoConfig.l2PaymasterTokenAddress,
          minimalAllowance: BigInt('1'),
          innerInput: new Uint8Array(),
        });
        console.log(paymasterParams);

        console.log(this.cryptoConfig.l2PaymasterTokenAddress);
        const tx: TransactionRequest = {
          from: this.walletL2.address,
          to: this.cryptoConfig.l2PaymasterContractAddress,
          data: checkIn.txHash,
          customData: {
            paymasterParams,
            gasPerPubdata: utils.DEFAULT_GAS_PER_PUBDATA_LIMIT,
          },
        };

        const estimateGas = await this.walletL2.estimateGas(tx);
        console.log(estimateGas);

Repo Link (Optional)

No response

Additional Details

No response

[kaymomin]

Hi @Enghin84, I see you are trying to deploy the codebase from the custom paymaster tutorial to a non-ZKsync-based ZK chain (openzk-testnet).

The paymaster code and approach in the ERC20 Paymaster tutorial is targeted for ZKsync Era and/or Zksync's ZK Stack based chains (for example, Abstract, Sophon, etc). The implementation of paymasters and AA these chains have, and the sdks and contract interfaces are tailored for ZKsync’s protocol.

If you are deploying on a non-zkync's zk stack chain such as openzk-testnet, the paymaster logic, transaction validation rules, and storage access patterns may differ. This is likely why you are encountering the Violated validation rules: Touched disallowed storage slots error.

[Enghin84]

Hi @kaymomin , openzk testnet is a zk stack chain. Is it possible you could adjust the tutorial for non matter labs zksync chains?

[kaymomin]

@Enghin84 can you send network config details for openZK testnet and where can I get the test eth from?

[Enghin84]

@kaymomin you can find all the details here, including the faucet for the native coin: https://openzk-testnet.hub.caldera.xyz/

[kaymomin]

Hey @Enghin84 I just ran the tutorial on openzk testnet (check on openzk explorer) and it worked (not throwing any error).

[kaymomin]

@Enghin84 following up if it worked for you or not?

[Enghin84]

Yes, it worked for me as well.
There was an issue with my paymaster. I needed to deploy a general paymaster, not approval based one. Thank you for your help.