As with any Payroll related inquiries, you should mention what Country's Payroll you are working on.
Please also mention what information is recorded in what Infotype. I assume that WT /4xx is generated in your Country's Taxation Sub-schema, but you will have to be more specific on what WT should generate what WT, which WT should be posted to which FI/CO account (Customer Specific) and under what "rules" the Amount of a WT is split into other WTs.