HANA SQL Sub Query - Unique Record

I have a sub query question on VBAP & VBEP.I want to get a unique record for my sub query based on the below criteria.

Appreciate any help on sql subquery.

1) Sort the data by VBELN,POSNR ASC & Confirmed Qty ( VBEP-BMENG)  DESC.

2) Now read only the first record for each Sales Order / Item. The result should extract ONLY one record from VBEP table.

Sample Data -1

VBAP Data

Sales Order               Item

320910685                10600

VBEP Data

Sales Order   Item        Schedule Line   Delivery Date    Confirmed Qty

320910685     10600      1                     10/21/2014           0

320910685     10600      3                     10/21/2014           0

320910685     10600      6                     10/21/2014           0

320910685     10600      7                     11/03/2014           100

320910685     10600      8                     11/03/2014           20

320910685     10600      9                     11/03/2014           30

RESULT:

Sales Order   Item        Schedule Line   Delivery Date    Confirmed Qty

320910685     10600      7                        11/03/2014            100

VBAP Data

Sales Order               Item

320910685                11800

VBEP Data

Sales Order   Item        Schedule Line   Delivery Date    Confirmed Qty

320910685      11800      2                        12/30/2015           1

320910685      11800      3                        12/30/2015           1

RESULT:

Sales Order   Item        Schedule Line   Delivery Date    Confirmed Qty

320910685     10600      2                         12/30/2015           1                              

                           [ OR ] 

320910685     10600      3                         12/30/2015           1