Here is the Tested Solution:
Basic Type: DELVRY01
Message Type: SHPCON, Process Code: DELV
Segment 1: E1EDL20
VBELN: (Inbound Delivery Number with leading Zeroes)
Segment 2: E1EDL18
QUALF: CHG
Segment 3: E1EDT13
QUALF: 007
NTANF: (Delivery Date in format: YYYYMMDD)
Segment 4: E1EDL24
POSNR: (Item Number with leading zeroes)
MATNR: (Material Number)
KDMAT: (Material belonging to the customer)
Let me know if you face any issues.
Regards,
Niranjan