Batch Determination quantity proposals in COR1

Dear Expert,

In my scenario,If i see the batch stock for material A,B and C in MMBE is 100,200 and 300.And if I do the batch determination for same material in COR1 then determination quantity for this material is 100.001,200.001 and 300.001.I dont know why system giving this quantity proposals in .001.

Can anyone knows why this happening.

Appreciate your help.

Regards.