MySQL InnoDB（错误号：150“外键约束格式不正确”）

Question

我有MySQL从我的数据库模型生成的以下SQL查询：

CREATE TABLE IF NOT EXISTS `Insurance Group`.`Customer info` (
  `ID` INT UNSIGNED NOT NULL,
  `First Name` CHAR(45) NOT NULL,
  `Last Name` CHAR(45) NOT NULL,
  `City` CHAR(20) NOT NULL,
  `Address` VARCHAR(20) NOT NULL,
  `State` CHAR(15) NOT NULL,
  `Phone number` VARCHAR(15) NOT NULL,
  `Credit Card` VARCHAR(20) NOT NULL,
  `Exp Date` DATE NOT NULL,
  PRIMARY KEY (`ID`))
ENGINE = InnoDB;


-- -----------------------------------------------------
-- Table `Insurance Group`.`Car insurance`
-- -----------------------------------------------------
CREATE TABLE IF NOT EXISTS `Insurance Group`.`Car insurance` (
  `Car Policy ID` INT UNSIGNED NOT NULL,
  `ID` INT UNSIGNED NOT NULL,
  `Make` CHAR(15) NOT NULL,
  `Model` CHAR(15) NOT NULL,
  `Year` INT NOT NULL,
  `Fees` VARCHAR(20) NULL,
  `Additional Driver` VARCHAR(45) BINARY NULL,
  `Liability Amount` INT UNSIGNED NOT NULL,
  `Collision Damage Amount` INT UNSIGNED NOT NULL,
  PRIMARY KEY (`Car Policy ID`),
  INDEX `fk_Car insurance_Customer info_idx` (`ID` ASC),
  CONSTRAINT `CarInsurance_CustomerInfo`
    FOREIGN KEY (`ID`)
    REFERENCES `Insurance Group`.`Customer info` (`ID`)
    ON DELETE NO ACTION
    ON UPDATE NO ACTION)
ENGINE = InnoDB;

然后我收到错误代码：1005。无法创建表insurance group。car insurance（错误号：150“外键约束格式不正确”）。