why inbound deliveries still is open after goods receipt???

hi every body

I take a report about open inbound deliveries by this way :

VL06I > for goods receipt

after take a report I knew that all of the inbound are in the report .

for example :

inbound 180010651 was receipted

why inbound deliveries still is open after goods receipt??? all of the inbound that receipted are in status of open ????