Solution : https://service.sap.com/sap/support/notes/110673 (SAP Service marketplace login required)
Key words : 
symptom input tax report - j_1hitax, output tax report - j_1hotax forthailand, additional key words thailand, calendar year andcalendar month, solution source code correction, fiscal year variant withyear, source code correction, determine tax year, fiscal year variant, year-end closed
Related Notes : 
       
| 107379 | Correction for Thai CV 30F/3 |