In SAP SuccessFactors Employee Central Payroll, you need to extend validation rule types with dimensions...

Use BADI PAY_RULE_BADI to enhance PCC Best Practice validation rule types with additional dimensions based on customer-specific fields

The custom infotype/fields must be available in the Dimensions catalog for the validation rule type. You need to add the required custom infotype/fields to the Supported Group/Dimension list

Create a custom ABAP program to add dimensions to the validation rules

Use transaction SPRO to configure additional dimensions in the existing validation rules without involving customer-specific fields