# "No network/scheme registered for x402 version: 2 which comply with the payment requirements"

> The client has no wallet scheme registered for any option the seller offers. What causes this x402 error and how to fix it.

The client has no wallet scheme registered for any option the seller offers.

|  |  |
| --- | --- |
| Reported by | the x402 client, before any payment is sent |
| Usually fixed by | the buyer or the seller, depending on the cause |

## Cause

None of the options in the quote's `accepts` match a network and scheme registered on the client. The message lists what the seller offered and what the client supports.

## Fix

- Buyer: register a scheme for one of the offered networks, for example `client.register("eip155:8453", new ExactEvmScheme(account))`.
- Seller: offer at least one widely supported option, such as USDC on Base.
- The [wrong-network scenario](https://x402testendpoint.com/scenarios/wrong-network) offers only an unsupported network to test that your client reports this cleanly.

## Reproduce it

The [Unsupported network only scenario](https://x402testendpoint.com/scenarios/wrong-network) on this site exercises this situation.

## About this reference

Causes are taken from the source of `@x402/core` 2.31. Other facilitators and later versions may use the same code for slightly different checks. See [all x402 errors](https://x402testendpoint.com/errors).

Source: https://x402testendpoint.com/errors/no-network-scheme-registered