Changing fiscal year variant in OB37
At the moment we have 12 standard periods with a 4, 4, 5 .... weeks
now we want to change this to calendar Months.
Some Months ago we blocked planning for 2009 and the posting periods are blocked. There are no postings/planning for 2009.
Cost element we create by year. 2009 not created and for that reason there are no PO with a date in 2009 (commitments).
SD is not used
Can we change the calendar from 2009 to the monthly periods or can we get some probelems?