SAP Basis Tech Supports

Symptom
An SAP developer has recommended that you install a patch for the
WebDynproRuntime.
Other terms
WebDynproRuntime, EhP1 SP4, NW04s, NW700
Reason and Prerequisites
This SAP Note applies to SAP NetWeaver EhP1 of 2004s only. Mind that your system has to be on release “2004s”, technically speaking “7.01″.
Your Web Application Server is on EhP1 SP1 and a new patch is available to correct the problem
Solution
Download the current sca’s from SMP.
Link to SMP :
https://service.sap.com/swdc
->Download->Support Packages and Patches

Update your system via JSPM.
Please refer the link to the official documentation for JSPM
http://help.sap.com/saphelp_erp2005vp/helpdata/en/1f/c45b4211aac353e10000000a1550b0/frameset.htm

History of delivered patches:
Current patch 2009-06-02:
SAPJTECHF04P patch #01(SP-level #04)
SAPJTECHS04P patch #01 (SP-level #04)

Note:
Due to the fact that many of the SDAs included in the SCA are offine deployment, the engine is restarted during the deployment.
An update is only required on the engine.
Time required:
The required time depends on whether the engine has to be restarted. In addition, the time required for the restart is determined by the
applications installed on the engine.