Open NWDS------------->Mobile perspective
Before developing the application u need to configure the MI settings in NWDS.
For that go to windows->preferences>MI development->give the following details
1) mi home folder as "MI installation directory
2)Java sdk tools.jar: it wiil take automatically because u give jdk settings while u install MI client
3) give the server settings and mi client logon username and password.
Then click on file ------>new--------->other
Then select MI development tool ---->SmartSync Project as shown below
Click on next button
Then enter required field.
Remember to give the project name and application name same. Then click on finish button.
Browse MetaRep.xml file where you save and added .
After creating project we have to generate war file
For this just right click on project select Export.
Then ur war file will be created under webapps folder of SAP mobile infrastructure with the same name as ur Application name.
C:\Program Files\SAP Mobile Infrastructure\webapps
Then Assign application to NWDA
Link --Mobile application Developement using NWDS and Mobile infrastructure