Solution : https://service.sap.com/sap/support/notes/201220 (SAP Service marketplace login required)
Key words :
automatic tax area selection pop-, terms tax area f4, residence tax area field, sap delivered user-exit, creating infotype 0207 record, p0207-taxar field, p0207-taxar, window overrides, 0f release, 1h release
Related Notes :
489185 | IT0207: Application error for user exits in Infotype 0207. |