Because IBM RSA 7.5.4 does not include Maven ,so we need install it manually .
But IBM RSA 7.5.4 is based on Eclipse 3.4.2 ,current Eclipse Maven plugin
m2eclipse (http://m2eclipse.sonatype.org) is compatible with Eclipse 3.5.2 and 3.6.1.
The solution:
install m2eclipse 0.9.8,download it from
http://m2eclipse.sonatype.org/sites/archives/0.9.8.200905041413.zip,
unzip it to a directory ,
Then open RSA ,help->software updates–>add site->select the location of the directory
only installs the required bundle.