Debt Class Segmentation
Every SA Type has a debt class. The debt class is used to categorize a service agreement's debt for the purpose of credit and collections (C&C) analysis. If a given SA Type has different categories of debt from C&C's perspective, you will have to split the SA Type.
Fastpath: 
For more information about debt class, refer to Designing Your Collection Procedures.
If we assume that your residential services are regulated and your commercial and industrial services are deregulated, we won't have to introduce additional SA types.
CIS Division/
SA Type
Distribution Code
Revenue Class
Rates
SP Type
Bill Seg Type
Debt Class
CA/G-RES
A/R-UTIL
R - residential
GALL-1
G-RES
SP-RATED
REGU
CA/G-COM
A/R-UTIL
C - commercial
GALL-1
G-COM
SP-RATED
UNRE
CA/G-IND
A/R-UTIL
I - industrial
GALL-1
G-IND
SP-RATED
UNRE
CA/W-RES
A/R-UTIL
N/A
WALL-1
W-RES
SP-RATED
REGU
CA/W-COM
A/R-UTIL
N/A
WALL-1
W-COM
SP-RATED
UNRE
CA/W-IND
A/R-UTIL
N/A
WALL-1
W-IND
SP-RATED
UNRE
CA/E-RES
A/R-UTIL
N/A
ERES-1, ERES-2
E-RES
SP-RATED
REGU
CA/E-COM
A/R-UTIL
N/A
ECOM-1
E-COM
SP-RATED
UNRE
CA/E-IND
A/R-UTIL
N/A
EIND-1
E-IND
SP-RATED
UNRE
CA/WW-RES
A/R-UTIL
N/A
WWALL-1
W-RES, WW-RES
SP-RATED
REGU
CA/WW-COM
A/R-UTIL
N/A
WWALL-1
W-COM, WW-COM
SP-RATED
UNRE
CA/WW-IND
A/R-UTIL
N/A
WWALL-1
W-IND, WW-IND
SP-RATED
UNRE
CA/CABLE
A/R-UTIL
N/A
CABLE
CABLE
SP-RATED
UNRE
CA/E-COY
EXP-COMP
N/A
E CO USE
E-CO USE
COMPUSAG
No debt
CA/G-COY
EXP-COMP
N/A
G CO USE
G-CO USE
COMPUSAG
No debt
CA/W-COY
EXP-COMP
N/A
W CO USE
W-CO USE
COMPUSAG
No debt
Notice the three company usage SA types do not have a debt class. This is because their bill segment type's FT algorithm doesn't cause debt to be created and therefore there is no reason to have a debt class. However, you'll need to create a "dummy" debt class - call it N/A - for these SA types because every SA type must reference a debt class.