MMPV Table

Hi,

When i try to run MB1C i get an error "Posting only possible in periods 2010/12 and 2010/11 in company code xxxx"

when i check MMRV the current period is 12/2010, but i am trying to close the period 12/2010 in MMPV but it says 'No Conversion' . Can anyone please assist what i am missing here

Thanks