这个错误通常表示您的 App 没有正确设置销售权限。解决方法如下：

1.登录您的 iTunes Connect 账号，进入 App 的应用程序管理页面。 2.点击左侧菜单栏中的“功能”选项卡，找到“价格和可用性”的部分。 3.在“销售状态”下，选择“在 App Store 可购买”选项。 4.点击“保存”。

如果您的 App 是消耗品项目，并且您正在尝试还原某些功能，则可以在代码中添加以下代码以验证收据：

// Swift
let receiptUrl = Bundle.main.appStoreReceiptURL!
let receipt = try? Data(contentsOf: receiptUrl)
let requestData = ["receipt-data": receipt?.base64EncodedString(options: []) ?? ""]
let request = try? JSONSerialization.data(withJSONObject: requestData, options: [])
let url = URL(string: "https://sandbox.itunes.apple.com/verifyReceipt")! // 使用沙盒环境
let session = URLSession.shared
var res: URLResponse?
var err: Error?
let semaphore = DispatchSemaphore(value: 0)
var resultData: Data?
let task = session.uploadTask(with: url, from: request!) { data, response, error in
  resultData = data
  res = response
  err = error
  semaphore.signal()
}
task.resume()
semaphore.wait()

// Objective-C
NSURL *receiptUrl = [[NSBundle mainBundle] appStoreReceiptURL];
NSData *receipt = [NSData dataWithContentsOfURL:receiptUrl];
NSDictionary *requestData = @{@"receipt-data": [receipt base64EncodedStringWithOptions:0]};
NSData *request = [NSJSONSerialization dataWithJSONObject:requestData options:0 error:nil];
NSURL *url = [NSURL URLWithString:@"https://sandbox.itunes.apple.com/verifyReceipt"]; // 使用沙盒环境
NSURLSession *session = [NSURLSession sharedSession];
NSMutableURLRequest *req = [NSMutableURLRequest requestWithURL:url];
[req setHTTPMethod:@"POST"];
[req setHTTPBody:request];
NSURLResponse *res = nil;
NSError *err = nil;
NSData *data = [NSURLConnection sendSynchronousRequest:req returningResponse:&res error:&err];