Total stock in MC.2 is different from MM03(general plant view)

Hi SAP Gurus.

Good day.

Can please advise on how MC.2 Total Stock is being calculated.

As checked from our SAP, MC.2 total stock is different from the unrestricted stocks displayed in MM03 (general plant View) and also in MMBE.

Sample:

Material ABCD is maintained in Plant 0001.

In MC.2 Total stocks is 50

In MMBE unrestricted stocks is 0 (no other stocks)

In MM03 unrestricted stocks is 0.

Can please advise on what are the possible reasons why MC.2 report is not the same as other standard transactions?

Thank you.

Acel