Diagnosis
You have entered a wage type in the "Liability Wage Type" field of the"Distribution Basis 3" block that already exists in the "Liability WageType" field of the "Distribution Basis 2" block.
Each wage type may exist only once in the table T52LIDIBASE.
Liability wage types that are entered in the blocks "Distribution Basis2" and "Distribution Basis 3" are processed together with the main wagetype "Liability Wage Type" to calculate the inflow principle.

Procedure
Adjust the entry in the "Liability Wage Type" field of the "DistributionBasis 3" block.
If the wage type package contains only two wage types, leave the"Distribution Basis 3" block empty.