Define processing class, evaluation class & Cumulation classes.

Processing Class
Processing Classes determines how wage types are processed during the payroll run. Sap has given 1-89 as standard processing classes and you can create custom specific processing classes as per your requirement
Example:
In the standard system, processing class 15 determines how a wage type is valuated in accordance with the principle of averages.
The standard system permits the following specifications for processing class 15:
Specification 1: Formula frame for averages over the last 3 months
Specification 2: Formula frame for averages over the last 12 months

Evaluation Class
Wage type characteristic that controls processing when evaluating and displaying the payroll results.

An evaluation class has different specifications.
Example:
- Specification 00: no printing on the form
- Specification 01: prints personal payments/deductions
- Specification 02: prints wage types included in the total gross amount
- Specification 03: prints wage types derived from time-based payments and included in the total gross amount.

Evaluation Class 01: Assignment of Wage Types to Symbolic Accounts

Example:
- Specification 20: Direct Labor Cost
- Specification 26: Recalculation Difference
- Specification 27: Over Payment
- Specification 30: Salaries
Cumulation classes

Wage Type should be added or cumulated to the respective Wage Type when processing payroll.