The reason for opening posting periods each month is to impede illicit postings to prior periods (reversing).
Since there is no need for such a constraint in teaching, you are able to open posting periods a priori up to a certain date. SAP’s IDES department has already performed these actions for most company codes until 12/2008.
The transaction code for period control is OB52. The figure below shows the status quo:
To open posting periods for future periods please proceed as follows:
Step 1. First, select all company code/account type combinations by clicking on button „Select All (F7)“ highlighted in the following screenshot.
Step 2. In the edit menu, please select „Change Field Contents...“.
Step 3. In the following window, please mark the entry „To fiscal year (period 1)“ and press ENTER.
Step 4. Choose the desired target year. To save time in the following years, choose a target year that is far in the future and then click the button “Replace“:
As a result you have opened the booking period until period 12 of your selected target year (in the screenshot 2015)