Solution : https://service.sap.com/sap/support/notes/1258421 (SAP Service marketplace login required)
Key words : 
geneva attestation/quittance, fiscal data ch, relevant data record, hr support package, relevant correction instructions, withholding tax statement, settle withholding tax, incorrect municipality code, withholding tax, municipality code
Related Notes : 
       
| 927915 | GeTIS, withholding tax accounting for canton of Geneva |