Solution : https://service.sap.com/sap/support/notes/926857 (SAP Service marketplace login required)
Key words :
add export parameter click, run transaction se37, function group reason, respective function modules, terms function module, attached document 'fm_changes_for_additionaltaxes, add import parameters, function module, 'export' tab, attached document
Related Notes :
| 1044403 | Correction to note 926857 - Dump in MIRO - for 46C release |
| 927189 | Master Note for Additional tax fields and changes |