Error message: Balance not zero: XXX- debit: XXX credit: XXX in MIGO

Hello Expert,

I post GR reversal with schedule agreement and movement type 902 via transaction MIGO. After check the items shows green light, but when i try to post it there is an error message popup shows 'Balance not zero: XXX-  debit: XXX  credit: XXX', please take attach screenshot as reference.

Could you please help me to check this? Why this kind of error shows up?

Thanks!

Lucas.