Message to open old FM period

Hi,

We are on ECC6 EHP 4 and implmenting the BCS part of FM. FM activation is year is 2014. I have the folllowing issue.

When I tried to post the MIGO (posting date Mar 2015)entry for old purhcase order (PO date is 2 Nov 2013), I am geting error message saying FM period 008/2013 not open for value type 51?

I do have few open items from 2013 onwards, do I have to open the FM period from 2013 onwards?

Please advise

Regards

Shailesh