Solution : https://service.sap.com/sap/support/notes/1583238 (SAP Service marketplace login required)
Key words : 
german income tax act, component     release         support package 1, sap_ess   erp2005 600     sp020 2, sap_ess   ehp3    603     sp009, support package, salary calculator, written incorrectly, report rpcnetd0, net calculation, monthly salary
Related Notes : 
       
| 1402713 | Changes in Employee Self-Service |