Tag Archives: cocoa error 133020

With regard to coredata storage, the operation could’t be completed. (cocoa error 133020.) 



self.context=[[NSManagedObjectContext alloc] initWithConcurrencyType:NSPrivateQueueConcurrencyType];
    [self.context setPersistentStoreCoordinator:dm.PSC];
    [[NSNotificationCenter defaultCenter] addObserver:self selector:@selector(mocDidSaveNotification:) name:NSManagedObjectContextDidSaveNotification object:nil];
    [self.context setMergePolicy:NSMergeByPropertyObjectTrumpMergePolicy];//important!!!