[Home](./index.md) > [@firebase/auth-types](./auth-types.md) > [MultiFactorError](./auth-types.multifactorerror.md) > [operationType](./auth-types.multifactorerror.operationtype.md) ## MultiFactorError.operationType property The type of operation (e.g., sign-in, link, or reauthenticate) during which the error was raised. Signature: ```typescript readonly operationType: OperationType; ```