Keychain errSecItemNotFound

Hello Apple Developer: I encountered some issues during development. I encrypted the secret key and stored it in the Keychain, but it failed when I tried to read it. I would like to ask if there is any problem with the code I wrote. Below is my code, including the storage and retrieval

NSMutableDictionary *query = [[NSMutableDictionary alloc] initWithObjectsAndKeys:(id)kSecClassGenericPassword,(id)kSecClass,

                                  serviceID,(id)kSecAttrService,

                                  @YES,(id)kSecReturnData,nil];

    

    CFTypeRef dataTypeRef = NULL;

    NSLog(@"SecItemCopyMatching");

    OSStatus status = SecItemCopyMatching((__bridge CFDictionaryRef)(query), &dataTypeRef);

    NSLog(@"SecItemCopyMatching end status = %d",status);

    if (status == errSecSuccess) {

        

        *privateData = CFBridgingRelease(dataTypeRef);

        return 0;

        

    }else{

        

        return status;

        

    }

NSMutableDictionary *attributespri = [[NSMutableDictionary alloc] initWithObjectsAndKeys:

        (id)kSecClassGenericPassword, (id)kSecClass,

        serviceID,                   (id)kSecAttrService,

        outData,                     (id)kSecValueData,

    nil];



    CFTypeRef dataRef = NULL;

    OSStatus priStatus = SecItemAdd((__bridge CFDictionaryRef)attributespri, &dataRef);



    if (dataRef) CFRelease(dataRef);

    return priStatus == noErr;