`invalid_exact_evm_token_name_mismatch`

The token name in the quote is not the name the token contract reports.


Reported by	the facilitator, during verify
Usually fixed by	the seller

Cause

The transfer simulation failed, and the token contract's on-chain name() differs from extra.name in the payment requirements. A signature made over the wrong name can never be accepted by the token.

Fix

Seller: set extra.name to the exact on-chain name. USDC is USD Coin on Base mainnet and USDC on Base Sepolia.
If you copied a quote from another network, re-derive the token details for the network you are actually using.

About this reference

Causes are taken from the source of @x402/evm 2.31. Other facilitators and later versions may use the same code for slightly different checks. See all x402 errors.