I want to transfer the tokens from one contract to another address

Question

When I transfer the token from the contract address: KT1LkNWZgVYh3zdaRkBb9aNgLEFCjVJwEKu2, it works well. However, when I switch back to the address KT1P8RdJ5MfHMK5phKJ5JsfNfask5v2b2NQS, an issue occurs. Below is my code:

const { TezosToolkit } = require ('@taquito/taquito');
const { InMemorySigner } = require ('@taquito/signer');


const Tezos = new TezosToolkit('https://ghostnet.ecadinfra.com/');
Tezos.setProvider({
  signer: new InMemorySigner('edskRpi3j2hwiRqRvjoETUe99L14Kz796pLS3N6rq6K3sLC9Xq2BY27KhTFtAUtkgEwacZWvsFaJ6Cnju2EWNYSEJkhDSwjGzf'),
});
var from = "tz1MSint56iUqoogrKsvEMEykpbKv2Yhmzss"
var to  = "tz1S2aWw5Jhz7RBcAKvJYfAG82Mv9LhEUobc"
var amount = 99
async function tranfer(){

const contract = await Tezos.contract.at('KT1P8RdJ5MfHMK5phKJ5JsfNfask5v2b2NQS');
await contract.methods.transfer([{ 
  from_: from, 
  txs: [{ to_: to, token_id: 0, amount: amount }] 
}]).send();

 }
tranfer()

The error I encounter is:

AddressValidationError: [from] Address is not valid: [{"from_":"tz1MSint56iUqoogrKsvEMEykpbKv2Yhmzss","txs":[{"to_":"tz1S2aWw5Jhz7RBcAKvJYfAG82Mv9LhEUobc","token_id":0,"amount":99}]}]

Answer 1

This is happening because both contracts have different parameter schema for the transfer entrypoint.

Goto KT1LkNWZgVYh3zdaRkBb9aNgLEFCjVJwEKu2 TzKt, the arguments should be in the format:

"schema:list:object": [
    {
        "from_:address": "address",
        "txs:list:object": [
            {
                "to_:address": "address",
                "token_id:nat": "nat",
                "amount:nat": "nat"
            }
        ]
    }
]

Goto KT1P8RdJ5MfHMK5phKJ5JsfNfask5v2b2NQS TzKt, the arguments should be in the format:

"schema:object": {
    "from:address": "address",
    "to:address": "address",
    "value:nat": "nat"
}

So, for the other contract you should call it like this:

await contract.methods.transfer(from, to, amount).send();

Note that the order of the argument should be same as in the schema, that is from, to, amount.

Answer 2

If the only thing you change is the contract address, the second contract's transfer entrypoint has a different set of parameter names. The first one expects from_, while the second one expects from. Are you adjusting the parameter names properly?