Diagnosis
The additional payments data you entered does not correspond to therules in the Wage Type Characteristics view (V_T511).

System Response
The wage type requires a different combination of amount andnumber/unit. The system cannot process your entry. The terminationprocess failed.

Procedure
Display the relevant wage type in view V_T511 and check the inputcombination for the Amount and Number/unit fields and setup the wage type with the correct details.
The Amount field is mandatory, however the Number/Unitfield is optional against the wage type.