Cant change allegiance of region

[Robb]

I want to change the allegiance of the region I am lord, but I get the message that I need at least 2 weeks in the realm to do this, I have been for way longer in my realm, maybe it has something to do with me being imprisoned last week, is there a way this can be fixed so I can change the allegiance of my region?

[Vita`]

Apparently a text error. It should say 'duchy', not 'realm'. Anyway, it looks to me like you hit the 14-days in your duchy mark next turn anyway.