What is branch code?

Excuse me, could you please elaborate on the concept of "branch code" in the context of cryptocurrency and finance? I'm a bit unclear on how it fits into the overall framework of financial transactions, especially in the digital realm. Is it a unique identifier assigned to specific branches of financial institutions for the purposes of tracking and managing transactions? Or does it serve a different purpose altogether? Clarifying this would greatly assist me in understanding its significance and how it relates to the broader field of cryptocurrency and finance.