Error 'FAILED_TO_DESERIALIZE_ARGUMENT' with Array Parameter Exceeding 10 Values in Aptos SDK v1.17.0

[ajselvan]

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Describe your question in detail.

Hi , we are encountering the error 'FAILED_TO_DESERIALIZE_ARGUMENT' when passing function arguments. Specifically, if an array parameter contains more than 10 values, this error occurs in the SDK during the signAndSubmitTransaction process. Could you please assist us with resolving this issue.
version: @aptos-labs/ts-sdk": "^1.17.0

What error, if any, are you getting?

FAILED_TO_DESERIALIZE_ARGUMENT

What have you tried or looked at? Or how can we reproduce the error?

when passing function arguments. Specifically, if an array parameter contains more than 10 values

Which operating system are you using?

Windows

Which SDK or tool are you using? (if any)

TypeScript SDK

Describe your environment or tooling in detail

SDK --> version: @aptos-labs/ts-sdk": "^1.17.0

[0xbrw]

a few options you can try.

• Our latest ts-sdk is on v1.30.0: https://aptos-labs.github.io/aptos-ts-sdk/@aptos-labs/ts-sdk-1.30.0/
• You can try running npm install @aptos-labs/ts-sdk@latest
• you could also try splitting you array into smaller chunks and submit multiple transactions

cc @0xmaayan

[0xmaayan]

@ajselvan Could you help with providing a code snippet so we can try and reproduce the error

[ajselvan]

Hi @0xmaayan this is my code snippet:

import { AptosConfig, Aptos, Network, Account, Ed25519PrivateKey } from "@aptos-labs/ts-sdk";
import dotenv from "dotenv";
import { PerpsMarkets } from "../src/econia/markets/perpsMarket";
dotenv.config();

async function main(): Promise<void> {

    // Setup the client
    const config = new AptosConfig({ network: Network.TESTNET });
    const aptos = new Aptos(config);
    const account = Account.fromPrivateKey({
        privateKey: new Ed25519PrivateKey(process.env.APTOS_PRIVATEKEY || ''),
    }); 
    const marketId = 66;
    const orderTypes = [true, true, true, true, true, true, true, true, true, true, true, true]
    const tradeSides = [true, true, true, true, true, true, true, true, true, true, true, true];
    const directions = [true, true, true, true, true, true, true, true, true, true, true, true]; //buy
    const sizes = [1000, 2000, 1000, 2000, 1000, 2000, 1000, 2000, 1000, 2000, 1000, 2000]; // 1 APT
    const prices = [5000, 6000, 5000, 6000, 5000, 6000, 5000, 6000, 5000, 6000, 5000, 6000]; // 5 USDC
    const leverages = [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2];
    const takeProfits = [undefined, undefined, undefined, undefined, undefined, undefined, undefined, undefined, undefined, undefined, undefined, undefined];
    const stopLosses = [undefined, undefined, undefined, undefined, undefined, undefined, undefined, undefined, undefined, undefined, undefined, undefined];
    const restrictions = [undefined, undefined, undefined, undefined, undefined, undefined, undefined, undefined, undefined, undefined, undefined, undefined];
    
    const perpsMarketsInstance = new PerpsMarkets(process.env.APTOS_PRIVATEKEY || '', Network.TESTNET, process.env.NODEREAL_TESTNET_URL);
    const payload = await perpsMarketsInstance.placeMultipleOrders(marketId, orderTypes, tradeSides, directions, sizes, prices, leverages, restrictions, takeProfits, stopLosses);
    const transactionPayload = await aptos.transaction.build.simple({
        sender: account.accountAddress,
        data: payload.data
    });

    const committedTxn = await aptos.transaction.signAndSubmitTransaction({
        transaction: transactionPayload,
        signer: account,
    });
    console.log(`Submitted transaction: ${committedTxn.hash}`);
    const response = await aptos.waitForTransaction({
        transactionHash: committedTxn.hash,
    });
    console.log("response", response.success);

}

main().catch(error => {
    console.error('An error occurred:', error);
});

[ajselvan]

Hi @0xmaayan Could you please assist us with resolving this issue.

[0xmaayan]

Thanks, could you share the full transaction payload and the contract address you submit the transaction to?

[ajselvan]

Hi @0xmaayan

This is my payload :

payload: {
success: true,
message: 'payload built succesfully',
data: {
function: '0x1ce63c441256263ea2f45dd2d3a1e68e5843107c65c10b79c7a2d5aa2b7a4e3e::perp_market::place_multiple_orders',
functionArguments: [
66, [Array],
[Array], [Array],
[Array], [Array],
[Array], [Array],
[Array], [Array]
],
typeArguments: [
'0x197b9c79f40089f150e3c493edb8cf145efec6bd6b0474f3b08ad738549fa1d1::asset::USDC'
]
}
}

This is my contract_address :

0x1ce63c441256263ea2f45dd2d3a1e68e5843107c65c10b79c7a2d5aa2b7a4e3e

This is my error txn_hash :

An error occurred: Xr [Error]: Transaction 0xc612de01cd2227707815cb35d595982fef7771b3eef1661aa414f62b826eced1 failed with an error: FAILED_TO_DESERIALIZE_ARGUMENT.

[gregnazario]

I'm getting FAILED_TO_DESERIALIZE_ARGUMENT when using a vector with more than 10 structs in it (e.g. Option, Object, etc.)

What happened?

The limit on the number of nested or unpacked structs (including in a vector) is 10.

This is from a previous security mitigation in the current VM implementation and for the moment, will stay at that amount.

https://github.com/aptos-labs/aptos-core/pull/8568/files#diff-ce29aaa4f72d88fa625f39d7ba651b6cb38014b3d38326538a630b2107384eabR255-R264

How can I address this?

There are two paths:

• if you're using vector<Object<T>> you can use vector<address> instead.
• if you're using vector<Option<T>> you can use vector<T>, and have a sentinel value that isn't used. For exapmle, if it was vector<Option<u64>> you could use a vector<u64> and use 0 as a "none" option.