> For the complete documentation index, see [llms.txt](/llms.txt). # Error codes The following tables describe error codes from the [MetaMask Delegation Framework contracts](https://github.com/metamask/delegation-framework). Use a decoder such as [calldata.swiss-knife.xyz](https://calldata.swiss-knife.xyz/decoder) to identify error signatures from raw revert data. ## Delegation Manager error codes[​](#delegation-manager-error-codes "Direct link to Delegation Manager error codes") | Error code | Error name | Description | | ---------- | ------------------------------------ | ----------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------- | | 0xb5863604 | InvalidDelegate() | The caller is not the [delegate](/smart-accounts-kit/development/reference/glossary#delegate-account)**Delegate account** The account that receives delegated authority and can redeem a delegation under its constraints. specified in the delegation. [Troubleshoot an invalid delegate.](/smart-accounts-kit/development/troubleshooting/invalid-delegate/) | | 0xb9f0f171 | InvalidDelegator() | The caller is not the [delegator](/smart-accounts-kit/development/reference/glossary#delegator-account)**Delegator account** The account that creates and signs a delegation to grant limited authority to another account. specified in the delegation. [Troubleshoot an invalid delegator.](/smart-accounts-kit/development/troubleshooting/invalid-delegator/) | | 0x05baa052 | CannotUseADisabledDelegation() | The delegation has been disabled by the delegator. | | 0xded4370e | InvalidAuthority() | The delegation chain authority validation failed. The authority hash of a child delegation does not match the hash of its parent delegation. | | 0x1bcaf69f | BatchDataLengthMismatch() | The array lengths do not match in a batch redeemDelegations contract call. | | 0x005ecddb | AlreadyDisabled() | The delegation has already been disabled. | | 0xf2a5f75a | AlreadyEnabled() | The delegation is already enabled. | | 0xf645eedf | ECDSAInvalidSignature() | Invalid ECDSA signature format. | | 0xfce698f7 | ECDSAInvalidSignatureLength(uint256) | The ECDSA signature length is incorrect. | | 0xac241e11 | EmptySignature() | The signature is empty. | | 0xd93c0665 | EnforcedPause() | The [Delegation Manager](/smart-accounts-kit/development/reference/glossary#delegation-manager)**Delegation Manager** The ERC-7710 component that validates and redeems delegations, including signature checks and caveat enforcer hooks. contract is paused by the owner. | | 0x3db6791c | InvalidEOASignature() | EOA signature verification failed. [Troubleshoot an invalid EOA signature.](/smart-accounts-kit/development/troubleshooting/invalid-signature/) | | 0x155ff427 | InvalidERC1271Signature() | Smart contract signature (ERC-1271) verification failed. | | 0x118cdaa7 | OwnableUnauthorizedAccount(address) | An unauthorized account attempted an owner only action. | | 0x1e4fbdf7 | OwnableInvalidOwner(address) | Invalid owner address in an ownership transfer. | | 0xf6b6ef5b | InvalidShortString() | A string parameter is too short. | | 0xaa0ea2d8 | StringTooLong(string) | A string parameter exceeds the maximum length. | ## Smart account error codes[​](#smart-account-error-codes "Direct link to Smart account error codes") | Error code | Error name | Description | | ---------- | --------------------------- | ---------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------- | | 0xd663742a | NotEntryPoint() | The caller is not the EntryPoint contract. | | 0x0796d945 | NotEntryPointOrSelf() | The caller is neither the EntryPoint contract nor the smart account itself. | | 0x1a4b3a04 | NotDelegationManager() | The caller is not the [Delegation Manager](/smart-accounts-kit/development/reference/glossary#delegation-manager)**Delegation Manager** The ERC-7710 component that validates and redeems delegations, including signature checks and caveat enforcer hooks. contract. | | 0xb96fcfe4 | UnsupportedCallType(bytes1) | The execution call type is not supported. | | 0x1187dc06 | UnsupportedExecType(bytes1) | The execution type is not supported. | | 0x29c3b7ee | NotSelf() | The caller is not the smart account itself. | ## Caveat enforcer error codes[​](#caveat-enforcer-error-codes "Direct link to Caveat enforcer error codes") | Error string | Description | | ------------------------------------------------- | ------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------- | | AllowedTargetsEnforcer:target-address-not-allowed | When redeeming a delegation with an allowedTargets caveat, the execution's target address is not in the allowed list. | | AllowedTargetsEnforcer:invalid-terms-length | When creating a delegation with an allowedTargets caveat, the encoded terms length is not a multiple of 20 bytes (Ethereum address). | | ERC20TransferAmountEnforcer:invalid-terms-length | When creating a delegation with an erc20TransferAmount caveat, the encoded terms are not exactly 52 bytes (20 byte Ethereum address + 32 byte amount). | | ERC20TransferAmountEnforcer:invalid-contract | When redeeming a delegation with an erc20TransferAmount caveat, the execution targets a different contract than the allowed token address. | | ERC20TransferAmountEnforcer:invalid-method | When redeeming a delegation with an erc20TransferAmount caveat, the execution calls a function other than transfer(address,uint256). | | ERC20TransferAmountEnforcer:allowance-exceeded | When redeeming a delegation with an erc20TransferAmount caveat, the cumulative transfer amount exceeds the allowed limit. | | CaveatEnforcer:invalid-call-type | When redeeming a delegation, the execution uses a batch call type, but the caveat enforcer only supports single calls. | | CaveatEnforcer:invalid-execution-type | When redeeming a delegation, the execution uses a non-default [execution mode](/smart-accounts-kit/development/reference/types/#executionmode), but the caveat enforcer only supports the default mode. |