Worked on enhancing the reliability of inter-process communication in the open-mpi/ompi repository by addressing a critical bug in the MPI_Intercomm_create function. Focused on improving edge-case handling for peer communicators, the solution introduced validation for invalid bridge communicators and out-of-bounds remote leaders, ensuring correct intercommunicator setup. This targeted fix reduced runtime errors in multi-peer configurations and aligned with broader goals for robust MPI-based workloads. The work was implemented in C, leveraging expertise in MPI and parallel computing to deliver a precise, quality-driven improvement that strengthened API correctness and contributed to the stability of complex distributed systems.