This article applies to:

• Ethereum
• Polygon
• BNB Smart Chain
• Avalanche
• Fantom

Issue

1. You attempt to send a transaction through an EVM-based node.
2. The node rejects the transaction wth the following error message:

   
   only replay-protected (EIP-155) transactions allowed over RPC

Cause

The node rejects transactions that do not provide the chain ID to protect from being able to replay them on other EVM chains.

See EIP-155: Simple replay attack protection.

Solution

Provide a chain ID in your transaction.

For the available chain IDs of EVM networks, see Chainlist.