Diffrence Between ECC6.0 EHP4 and ECC 6.0 EHP5 (On SD Module)

Hi.

Please let me know what are all the difference in EHP 4 & EHP 5 in sap SD Module. i have already search the forum refered the previous thread & got some information from sap service market place but unable to make out the exact differences

Thanks in Advance

Faisal Khan