Difference in Requirement Quantity and Commited Quantity In Process Order

Dear All,

I have a situation here ,

In a process order (Cor3)

there are 4 components of same materials but ofcourse of different batches.

But to the surprise of one Item no.0010 in the material component tab there is a differnece between Requirement quantity and Commited(confirmed) quantity,

Even though , i can see full availability of Material Stock in MMBE.

Requesting suggestion for a probable reason.