bholus7 has just posted in the SAP MM Forum (Material Management Module) forum of Wiki Newforum under the title of Sap mm faq.
This thread is located at http://www.wikinewforum.com/showthread.php?t=6000
Here is the message that has just been posted:
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*Can any one tell me what is MM closing and what is FI closing? How can I know if period is closed?*
MM closing means that you can not post materials document. In MM area you have two open periods current and previous.
If you do not set other in MMRV - here you can check which are the open MM periods for company code. If you check Allow posting to previous period - it will forbid MM posting in previous period.
FI open period (ob52) allow to post FI documents. As I know you can allow postings for some accounts - for example forbid material accounts for previous period in order to prevent MM posting until you finish all FI documents.
*How to add an attachment to a Purchase Order in SAP?
* You can attach manually any document to PO without using Document Management System ( DMS ) in SAP 4.6C.
But you cannot attach document while you create PO in T/Code ME21N
Save you PO ( ME21N ) and again open with change ( ME22N ) then you can attach document through Service for Object button. Service for Object button available down side of Command screen ( in your PO screen ME22N )
Click your Service Object button -> Create -> Create attachment
then select your window directory ( which file you need to attach) select your file Now your system shows message Service "Create attachment" is started.
Save again your PO. You can see (open) your attachment in same field ( Service for Object ) select and Create and check attachment list. You can attach as many document in your PO.
Note: This is only information for internal or you can print separately this document for sending to vendor ( fax ) System will not print automatically along PO print out.
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