Solution : https://service.sap.com/sap/support/notes/88606 (SAP Service marketplace login required)
Key words : 
thai version 30f/1 additional key words thai, --withholding tax certificated adding statement, asset accounting- enhancement function module, petty cashier-  additional checking, sd/mm view maintenance          7, raw materials reports-- correction, petty cash-  add statement, thai 30f/1 version, create withholding tax certificate, -total- print special report
Related Notes : 
       
| 96555 | Patch Correction Thai Version 30F/2 | 
| 45463 | Thai installation procedure | 
| 33525 | Important information about SAP patches (< 3.1H) |