Core Data Null Relationship

Question

I have a to-one relationship in my data model with Core Data. I'm trying to set the value of the relationship but Core Data keeps thinking that it's nil. The "creatorUser" relationship is not optional, so when I go to save my managed object context, Core Data gives errors because it thinks the "creatorUser" is nil.

Any help would be greatly advised.

NSManagedObject *teamManagedObject = [NSEntityDescription insertNewObjectForEntityForName:@"DCTeam" inManagedObjectContext:_managedObjectContext];
// Creator Properties
NSManagedObject *creator = [self userForID:[ticketInfo objectForKey:@"userid"]];
if (!creator) {
    creator = [NSEntityDescription insertNewObjectForEntityForName:@"DCUser" inManagedObjectContext:_managedObjectContext];

    [creator setValue:[personInfo objectForKey:@"userid"] forKey:@"userid"];
    [creator setValue:[personInfo objectForKey:@"creatorName"] forKey:@"name"];
}

[teamManagedObject setValue:creator forKey:@"creatorUser"];

Answer 1

The error I was getting was '1570'. That's the one that says that a non-optional relationship is nil. nall is correct, the relationship was supposed to be a to-many. This was an oversight by myself which is why Core Data didn't like pairing up the relationship.

Thanks to all that replied!