“Posting only possible in periods 2009/03 and 2009/02 in company code BP01″

The above error would be encountered during posting of transactions in Material Management (MM) component. E.g. you’re posting goods receipt (GR) in April 2009, you would be prompted with the above error if period 04 2009 has not yet opened.  The said error has nothing to do with Financial Accounting “Open and Close posting period” procedure. This is purely a procedure under MM component and should be done to open the next period.

Path:  Logistics → Materials Management → Material Master → Other → Allow Posting to Previous Period.

Transaction Code: MMPV 

The “Close Period for Material Master Records” appears. Enter your company code, the period/year to open, the the event (check and close period). Then choose Execute button or press F8 on your keyboard.

Results:

Period 04 2009 is now open. You could now post MM transactions for the said period. On the other hand, you can no longer post to period 02 2009.

Cheers, hope this helps you