GR created against same SES document - Not Correct

Hi Gurus,

I have the following issue. It seems the system did not created proper documents when user GR against the same SES document:

We can see user created SES 1000090838 on 18.11.2014 and then GR 101 against the same SES on 10.12.2014. The PO amount is for $ 51,000 total. So if the user wanted to receive the total amount against the same SES the system should have created a 102 document deleting the -$25,500 and created a 101 document for the amount $51,000.

Later that same day 10.12.2014 the user deleted the SES 1000090838 but we still have one 101 document 5000023743 that still appears in our PO History.

How can I cancel/deleted this 101 document 5000023743?

I appreciate the support.

Regards