I get this error: SPDOR is out of scope/ not declared while I use SPDOR in my program.How to solve it?

You need to define SPDOR in your code

Ma’m please help me out.I want to activate external I/O intwo RCM4000 so as to transfer data from one module to other.So ,should I make RCM4000 1 as slave and RCM4000 2 as master.?Can you provide the commands to activate the registers? Or can you Please tell which all registers to be activated?