Final answer:
The last digit in an SSIC code designates the organizational department within a business.
Step-by-step explanation:
The last digit in an SSIC code designates organizational department. The SSIC (Standard Industrial Classification) code is a numerical system used to classify business establishments into different industry sectors. Each code consists of a series of numbers that identify various aspects of a business, such as industry type, organizational structure, and geographic location. The last digit specifically represents the organizational department within a company, providing a way to differentiate between departments or divisions within the same industry.