# CCIP v1.6.1 Error Codes and Messages API Reference
Source: https://docs.chain.link/ccip/api-reference/evm/v1.6.1/errors

> For the complete documentation index, see [llms.txt](/llms.txt).

> **NOTE: Integrate Chainlink CCIP v1.6.1 into your project**

When invoking the `ccipSend` [function](/ccip/api-reference/evm/v1.6.1/i-router-client#ccipsend), 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 Errors

## OnRamp Errors

## FeeQuoter Errors

## Rate Limiter Errors

## Token (ERC20) Errors

## BurnMintERC20 Errors

## Token Pool Errors