Errors API Reference

If you use NPM, install the @chainlink/contracts-ccip NPM package and provide the version number:

npm install @chainlink/contracts-ccip@1.2.1

If you use Yarn, install the @chainlink/contracts-ccip NPM package and provide the version number:

yarn add @chainlink/contracts-ccip@1.2.1

If you use Foundry, install the v1.2.1 release:

forge install smartcontractkit/ccip@42047e5303ac910a40ccc0076643d689479e94a6

When invoking the ccipSend function, it is possible to encounter various errors. These might be thrown either by the CCIP router or by one of the downstream contracts called by the CCIP router. Below is a compiled list of potential errors you might encounter. Referencing this list will enable you to capture and handle these exceptions gracefully.

Router

Error	Parameters	Description
UnsupportedDestinationChain	uint64 destChainSelector	Thrown when the destination chain is not supported.
InsufficientFeeTokenAmount	-	Thrown when the CCIP fees are paid with native tokens, but not enough is sent with the transaction.
InvalidMsgValue	-	Thrown when the CCIP fees are not paid in native tokens, but `msg.value` is non-zero.

Onramp

Error	Parameters	Description
NotAFeeToken	address token	Thrown when an unsupported fee token is used.
UnsupportedToken	IERC20 token	Thrown when an unsupported transfer token is used.
InvalidAddress	bytes encodedAddress	Thrown when the receiver address is invalid.
InvalidExtraArgsTag	-	Thrown when an invalid extra arguments tag is used.
RouterMustSetOriginalSender	-	This error should never be thrown as the router always sets the sender.
MustBeCalledByRouter	-	This error should never be thrown as the router always makes the call.
MessageGasLimitTooHigh	-	Thrown when the gas limit is too high.
UnsupportedNumberOfTokens	-	Thrown when too many tokens are involved in the transfer.
SenderNotAllowed	address sender	Thrown when the sender is not allowlisted.
MaxFeeBalanceReached	-	Thrown when the onRamp has reached its maximum fee storage capacity. If it is full, it cannot process new transactions.

RateLimiter

Error	Parameters	Description
PriceNotFoundForToken	address token	Thrown when a price cannot be found for a specific token.
BucketOverfilled	-	This error should never be thrown as it indicates an invalid bucket state.
AggregateValueMaxCapacityExceeded	uint256 capacity uint256 requested	Thrown when the user requests to transfer more value than the capacity of the aggregate rate limit bucket.
TokenMaxCapacityExceeded	uint256 capacity uint256 requested address tokenAddress	Thrown when the user requests to transfer more of a token than the capacity of the bucket.
AggregateValueRateLimitReached	uint256 minWaitInSeconds uint256 available	Thrown when the user requests to transfer more value than currently available in the bucket. The user might have to wait for at least `minWaitInSeconds` for enough availability or transfer the currently `available` amount.
TokenRateLimitReached	uint256 minWaitInSeconds uint256 available address tokenAddress	Thrown when the user requests to transfer more of a token than currently available in the bucket. The user might have to wait at least `minWaitInSeconds` for enough availability, or transfer the currently `available` amount.

ERC20

Error	Description
ERC20: burn amount exceeds balance	Thrown when the amount to be burned exceeds the pool balance.
ERC20: transfer amount exceeds allowance	Thrown when the transfer amount exceeds the allowance.

PriceRegistry

Error	Parameters	Description
ChainNotSupported	uint64 chain	Thrown when a chain is not supported.
StaleGasPrice	uint64 destChainSelector uint256 threshold uint256 timePassed	Thrown when the gas price is stale.
TokenNotSupported	address token	Thrown when a token is not supported.
StaleTokenPrice	address token uint256 threshold uint256 timePassed	Thrown when the price of a token is stale.