548e6448 As a developer building applications on the Binance Smart Chain (BSC) testnet or mainnet, deploying ERC-721 tokens can be a straightforward process. However, when using a Metamask Chrome extension to interact with these assets, users often encounter issues sending deployed ERC721 tokens. In this article, we’ll explore why this might be happening and provide some troubleshooting steps to resolve the issue.

The Problem:

ERC-721 Token Not Found: When you deploy an ERC-721 token using the MetaMask Chrome extension on BSC testnet or mainnet, the token is not automatically listed in the Metamask browser’s list of deployed assets.

Button “Send” Fades Out: Even when the token is found, the “Send” button doesn’t work as expected.

Why This Happens:

Token List Not Updated: When you deploy an ERC-721 token using MetaMask Chrome, the token’s metadata (e.g., contract address) and ABI are stored in your browser’s local storage. However, when you try to interact with this token on another chain or platform that uses a different token registry or ABI, the token might not be listed correctly.

Token Not Configured for Interactions: The `erc721` module in MetaMask Chrome requires specific configuration settings for interacting with deployed ERC-721 tokens. If these settings are not properly set up, it can cause issues with sending and receiving token balances.

Troubleshooting Steps:

To resolve the issue, try the following:

### Step 1: Update MetaMask Chrome to Latest Version

Ensure you’re running the latest version of MetaMask Chrome on your browser. You can check for updates in your browser’s settings or by searching for “MetaMask Chrome” in the search bar.

### Step 2: Check Token List and Configuration

Refresh Token List: Refresh the token list in your browser to ensure it contains all deployed assets, including the ERC-721 tokens.

Configure MetaMask Chrome for Interactions: Review the `erc721` module configuration settings on your MetaMask Chrome profile:

a. Contract Address: Verify that you’re using the correct contract address for the deployed token.

b. ABI: Ensure you’ve configured the ABI (Application Binary Interface) correctly.

### Step 3: Use a Different Browser or Platform

Try interacting with the ERC-721 token on another browser or platform to see if the issue persists:

Other Browser: Switch to an alternative browser, such as Brave or Firefox.

Alternative Platform: Try deploying and sending tokens on a different blockchain or network, like Ethereum mainnet.

### Step 4: Verify Token Metadata

If you’re still experiencing issues after updating MetaMask Chrome and refreshing the token list, try verifying the metadata of your deployed ERC-721 token:

Open the contract in the console (F12) and inspect its `contractAddress` property.

Check if the contract address matches what’s listed in your browser.

### Additional Tips

Make sure you’ve installed the latest version of MetaMask Chrome on your device.

If you’re using a development environment, ensure that you have the necessary dependencies (e.g., Web3.js) set up correctly.

If none of these steps resolve the issue, consider reaching out to the MetaMask support team for further assistance.

By following these steps and troubleshooting tips, you should be able to resolve the issue with sending deployed ERC-721 tokens using the Metamask Chrome extension on BSC testnet or mainnet.