Error while trying to Cancel GI for any STO

Hi All,

I want to put deletion indicator against a line item in STO. However the PO history shows there is a DN created and a 641 movement done.

Now if I wnat to reverse the entire thing, how do I go about this and what T-codes to be used ?

If I am getting the below error if I am trying to cancel goods issue using VL09.

"Cancellation of goods movement from decentr. systems is not possible". It is not allowing to cancel the GI using MBST as well.

Kindly help this is a critical issue...