Solution : https://service.sap.com/sap/support/notes/213693 (SAP Service marketplace login required)
Key words :
function module call, advanced correction section, infotype 209 required fields, 'tax authority' field, 'tax authority', required field, 'worksite' fields, 'worksite' field, screen field, error message
Related Notes :
| 643598 | IT0209: Automatic Refresh of Worksite F4 Values |