Got rid of some trivial warnings (nested comments and tokens after #endif).
<?xml version="1.0"?><!DOCTYPE SystemDefinition SYSTEM "sysdef_1_4_0.dtd" [
<!ENTITY layer_real_source_path "sf/mw/serviceapi" >
]>
<SystemDefinition name="serviceapi" schema="1.4.0">
<systemModel>
<!-- Common file for prebuild layers-->
<layer name="mw_layer">
<module name="serviceapi">
<unit name="serviceapi" unitID="sapido.serviceapi" bldFile="&layer_real_source_path;/group" mrp="" />
</module>
</layer>
</systemModel>
</SystemDefinition>