ITA Retrofit - Complex Rollup
These groups consist of six levels ranging from Complexity 1 to Complexity 6, with level 6 the most complex. Within each complexity, nine additional subcomplexity levels exist.
Example: Retrofit Digital Complex Rollup Complexity 4.0 to 4.9

Retrofit Digital Complex Rollup
Retrofit Electro Optic Complex Rollup
Retrofit Analog/Digital Hybrid Complex Rollup
Retrofit RF Complex Rollup