All errors thrown from the SDK are instances of the FuelError class which will have an accompanying ErrorCode.
Here is a list of the expected error codes the SDK can throw. These error codes are used to help understand the error that has been thrown with potential resolutions.
ABI_MAIN_METHOD_MISSING When your ABI does not have a main method.
This can be resolved by adding a main method to your ABI. This is prevalent in scripts and predicates that must contain a main method.
ABI_TYPES_AND_VALUES_MISMATCH When the arguments supplied to the function do not match the minimum required input length.
Check that the arguments supplied to the function match the required type.
ACCOUNT_REQUIRED When an Account is required for an operation. This will usually be in the form of a Wallet .
It could be caused during the deployments of contracts when an account is required to sign the transaction. This can be resolved by following the deployment guide here .
CONFIG_FILE_NOT_FOUND When a configuration file is not found. This could either be a fuels.config.[ts,js,mjs,cjs] file or a TOML file.
Ensure that the configuration file is present in the root directory of your project.
CONFIG_FILE_ALREADY_EXISTS When a configuration file already exists in the root directory of your project.
You can not run fuels init more than once for a given project. Either remove the existing configuration file or update it.
CONVERTING_FAILED When converting a big number into an incompatible format.
Ensure that the value you've supplied to the big number is compatible with the value you are converting to.
CONTRACT_SIZE_EXCEEDS_LIMIT When the contract size exceeds the maximum contract size limit.
Ensure that the contract size is less than the maximum contract size limit, of 100 KB. This can be validated by checking the bytecode length of the contract.
DUPLICATED_POLICY When there are more than policies with the same type, for a transaction.
Ensure that there are no duplicate (by type) policies for a transaction.
ERROR_BUILDING_BLOCK_EXPLORER_URL When more than one of the following options is passed: path, address, txId, blockNumber.
Check that only one of the above is passed.
FUNCTION_NOT_FOUND When the function with the given name, signature or selector is not found in the ABI.
Check that the function name, signature or selector is correct and exits on the ABI.
FUNDS_TOO_LOW When the funds in the account are lower than the required amount.
Ensure that the account has enough funds to cover the transaction.
GAS_LIMIT_TOO_LOW When the gas limit is lower than the minimum gas limit.
Increase the gas limit to be greater than the minimum gas limit.
GAS_PRICE_TOO_LOW When the gas price is lower than the minimum gas price.
Increase the gas price to be greater than the minimum gas price.
HD_WALLET_ERROR A hardware wallet will throw for unsupported configurations.
The error message will determine which element of the configuration is incorrect. It could be due to the public or private key or when configuring to/from an extended key.
INVALID_CHECKSUM Checksum validation failed for the provided mnemonic.
Ensure that the mnemonic is correct.
INVALID_CHUNK_SIZE_MULTIPLIER When the chunk size multiplier is not between 0 and 1.
Ensure that the chunk size multiplier is a number that it is between 0 and 1.
INVALID_CONFIGURABLE_CONSTANTS When the program type either: does not have configurable constants to be set; or the provided configurable constant does not belong to the program type, as defined by its ABI.
Ensure the configurable constants provided are correct and are defined in ABI.
INVALID_COMPONENT When an expected component is not found in the ABI or is malformed.
Ensure that you have correctly formed Sway types for Arrays and Vectors .
INVALID_CREDENTIALS When the password provided is incorrect.
Ensure that the password is correct.
INVALID_DATA When the value being passed is not considered valid, as defined by the function.
Check the function signature and ensure that the passed value is valid.
INVALID_ENTROPY When the entropy is not: between 16 and 32 bytes; a multiple of 4.
Ensure that the entropy is between 16 and 32 bytes and a multiple of 4.
INVALID_EVM_ADDRESS When the provided EVM address is invalid.
Ensure that the EVM address is valid.
INVALID_INPUT_PARAMETERS When the provided input parameters are not valid.
The error message will determine which parameter is missing. It could be that the provided program type is not one of the following contract, script, or predicate.
INVALID_MNEMONIC When the supplied mnemonic is invalid.
Check the message for more details. It could be that the mnemonic phrase word length is not one of the following: 12, 15, 18, 21, or 24 lengths.
INVALID_PASSWORD When the provided password is incorrect.
Ensure that the password is correct.
INVALID_POLICY_TYPE When the supplied policy type is invalid for the given Script.
Check the policy type is defined in PolicyType.
INVALID_PROVIDER When unable to connect to the Provider or Network supplied to a method on the Fuel class.
Check that the Provider or Network is supplied correctly.
INVALID_PUBLIC_KEY When the provided public key is invalid.
Ensure that the public key is valid.
INVALID_RECEIPT_TYPE When the receipt type is invalid.
Check the type is within ReceiptType.
INVALID_REQUEST When the request to the Fuel node fails, error messages are propagated from the Fuel node.
Check the error message from the Fuel node.
INVALID_SEED When the seed length is not between 16 and 64 bytes.
Ensure that the seed length is between 16 and 64 bytes.
INVALID_TRANSACTION_INPUT When the input type is invalid.
Check the type is within InputType.
INVALID_TRANSACTION_OUTPUT When the output type is invalid.
Check the type is within OutputType.
INVALID_TRANSACTION_STATUS When the transaction status received from the node is unexpected.
Check the status received is within TransactionStatus.
UNSUPPORTED_TRANSACTION_TYPE When the transaction type from the Fuel Node is not supported.
The type is within TransactionType .
INVALID_TTL When the TTL is less than or equal to zero.
Ensure that the TTL is a number and that the TTL is greater than zero.
INVALID_WORD_LIST When the word list length is not equal to 2048.
The word list provided to the mnemonic length should be equal to 2048.
INVALID_URL When the URL provided is invalid.
Ensure that the URL is valid.
JSON_ABI_ERROR When an ABI type does not conform to the correct format.
It is usually caused by an incorrect type/s within your program, check our type docs here for information on the types we support and their expected format.
LOG_TYPE_NOT_FOUND When the log type ID supplied can not be found in the ABI.
Check that the log type ID is correct and exists in the ABI.
MISSING_CONNECTOR A connector is missing when it's required for a given operation.
Ensure that a connector has been supplied to the Account or Wallet.
MISSING_PROVIDER A provider is missing when it's required for a given operation.
It could be caused by the provider not being set for either an Account or a Wallet - use the connect method to attach a provider.
MISSING_REQUIRED_PARAMETER When a required parameter has not been supplied to a given method.
The error message will determine which parameter is missing. This could be caused during type generation when neither inputs nor filepaths are supplied (at least one is required).
NODE_INFO_CACHE_EMPTY When the Fuel Node info cache is empty; This is usually caused by not being connected to the Fuel Node.
Ensure that the provider has connected to a Fuel Node successfully.
NOT_ENOUGH_FUNDS When the account sending the transaction does not have enough funds to cover the fee.
Ensure that the account creating the transaction has been funded appropriately.
TIMEOUT_EXCEEDED When the timeout has been exceeded for a given operation.
Check that you're connected to the network and that the network is stable.
TYPE_NOT_FOUND When the type with the given type ID is not found in the ABI.
Check that the type ID is correct and exists in the ABI.
TYPE_NOT_SUPPORTED When an unexpected type has been detected - the error message will determine which type is incorrect.
Check the type against your ABI and ensure that it is correct. You can find a list of all our types here .
UNSUPPORTED_FUEL_CLIENT_VERSION When the version of the Fuel Node you are targeting is not supported by the client you are accessing it from.
Check the version of the Fuel Node and use a compatible version of the SDK to target it.
WALLET_MANAGER_ERROR A wallet manager will throw for a multitude of reasons. The error message will determine which element of the configuration is incorrect.
It could be that the passphrase is incorrect and/or the wallet does not exist in the manager.
WORKSPACE_NOT_DETECTED When the workspace is not detected in the directory indicated in the message.
Ensure that the workspace is present in the directory specified.
UNKNOWN In cases where the error hasn't been mapped yet, this code will be used.
If you believe you found a bug, please report the issue to the team.
MAX_INPUTS_EXCEEDED When the number of transaction inputs exceeds the maximum limit allowed by the blockchain.
MAX_OUTPUTS_EXCEEDED When the number of transaction outputs exceeds the maximum limit allowed by the blockchain.
MAX_COINS_REACHED When performing a funding operation, or calling getResourcesToSpend, this error can be thrown if the number of coins fetched per asset exceeds the maximum limit allowed by the blockchain.
This can be avoided by paginating the results of the getCoins method to fund your transaction, or by reducing the number of UTXOs for your account. This can be done by performing a transfer that amalgamates your UTXOs, as demonstrated in this cookbook .