Solving MIP using MCP

Dear community team,

I’m trying to solve a BIP using MCP solver. When I run the problem I have the following issue:

Discrete variables can only appear in MIP, RMIP, MINLP, RMINLP, MIQCP or RMIQCP MPEC RMPEC problems.

I was wondering if,
A) Is it possible to use MCP solver for BIP/MIP?
B) I’m trying to use LR (Lagrangian relaxation) to solve the problem. Is there any way to use MCP for that?

Regards
Abbas