Hi Raj,
Media 51041991_1 to 4 is based on Netweaver 7.03 Java components, but you have selected the option EHP1 for SAP Netweaver 7.3 in Software Provisioning manager.
Download 70SWPM10SP04_3-20009707.sar
which is based on netweaver 7.0X, in that case it will accept your existing media files http://scn.sap.com/ for java components. Try this
SWPM SWPM10SP04_3-20009707 - SW
used for installation of Netweaver 7.1 and higher.
regards
kartik
