Errors API Reference

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	Error Selector	Description
UnsupportedDestinationChain	uint64 destChainSelector	0xae236d9c	Thrown when the destination chain is not supported.
InsufficientFeeTokenAmount	-	0x07da6ee6	Thrown when the CCIP fees are paid with native tokens, but not enough is sent with the transaction.
InvalidMsgValue	-	0x1841b4e1	Thrown when the CCIP fees are not paid in native tokens, but msg.value is non-zero.

Onramp

Error	Parameters	Error Selector	Description
NotAFeeToken	address token	0xa7499d20	Thrown when an unsupported fee token is used.
UnsupportedToken	IERC20 token	0xbf16aab6	Thrown when an unsupported transfer token is used.
CannotSendZeroTokens	-	0x5cf04449	Thrown when the user tries to send a zero amount of tokens.
InvalidChainSelector	uint64 chainSelector	0xd9a9cd68	Thrown when an invalid destination chain selector is used.
InvalidAddress	bytes encodedAddress	0x370d875f	Thrown when the receiver address is invalid.
InvalidExtraArgsTag	-	0x5247fdce	Thrown when an invalid extra arguments tag is used.
RouterMustSetOriginalSender	-	0xa4ec7479	This error should never be thrown as the router always sets the sender.
MustBeCalledByRouter	-	0x1c0a3529	This error should never be thrown as the router always makes the call.
MessageTooLarge	uint256 maxSize uint256 actualSize	0x86933789	Thrown when the message size exceeds the maximum allowed size.
MessageGasLimitTooHigh	-	0x4c4fc93a	Thrown when the gas limit is too high.
UnsupportedNumberOfTokens	-	0x4c056b6a	Thrown when too many tokens are involved in the transfer.
SenderNotAllowed	address sender	0xd0d25976	Thrown when the sender is not allowlisted.
MaxFeeBalanceReached	-	0xe5c7a491	Thrown when the onRamp has reached its maximum fee storage capacity. If it is full, it cannot process new transactions.

RateLimiter

Error	Parameters	Error Selector	Description
PriceNotFoundForToken	address token	0x9a655f7b	Thrown when a price cannot be found for a specific token.
BucketOverfilled	-	0x9725942a	This error should never be thrown as it indicates an invalid bucket state.
AggregateValueMaxCapacityExceeded	uint256 capacity uint256 requested	0xf94ebcd1	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	0x1a76572a	Thrown when the user requests to transfer more of a token than the capacity of the bucket.
AggregateValueRateLimitReached	uint256 minWaitInSeconds uint256 available	0x15279c08	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	0xd0c8d23a	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

PriceRegistry

Error	Parameters	Error Selector	Description
ChainNotSupported	uint64 chain	0x2e59db3a	Thrown when a chain is not supported.
StaleGasPrice	uint64 destChainSelector uint256 threshold uint256 timePassed	0xf08bcb3e	Thrown when the gas price is stale.
TokenNotSupported	address token	0x06439c6b	Thrown when a token is not supported.
StaleTokenPrice	address token uint256 threshold uint256 timePassed	0xc65fdfca	Thrown when the price of a token is stale.