You can find the below Financial Year End Activities of SAP mm
1) Check for open POs which are pending for GR (which are supposed to be posted in the current year) with Transaction Code ME2N
2) Check for open Physical inventory docs with Transaction Code MI22
3) Check for Subcontracting that are still pending (which are supposed to be posted in the current year) with ME2N
4) Make sure all goods movements are completed in current year. This will be verified with ME2N and MB51
Note: For countries like India, Fiscal year will be April to March so Inventory and Invoice Receipt number ranges etc. would be maintained in December end only so mostly no number range maintenance from MM side. You may check any excise related are needed.
And MM Period Closing Activity with transaction code MMPV and any GR/IR Clearing activity with transaction code MR11 etc. activities will be mostly taken care by Finance but not MM.
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