As tip, search this forum for L1100.
Basically the linker tells you that there are two objects at 0X268 address. One is probably the PTJ register defined in mc9s12xdp512.c, the other one, well dont know.
Basically you apear to have in your code
unsigned char whatever@0x268;
and somewhere else
unsigned char anotherThing@0x268;
Could also be that one of the definitions is a asm ORG section.
Daniel