Solution : https://service.sap.com/sap/support/notes/850566 (SAP Service marketplace login required)
Summary :
When multiple company codes are assigned to a single country, all tax codes for 'plants abroad' listed in Transaction OBZT are displayed, even if actual plants are only relevant for certain codes. To refine tax code selection, a new constant should be established in the T001I table. This is managed in SM30 by adding a new parameter type "PNOWIA" signifying "Plant abroad not required". Subsequently, in Transaction OBY6, company codes not needing this tax code can set this parameter to 'X'. This adjustment ensures only relevant tax codes are displayed or those without specific country assignments.
Key words :
obzt invfo-mwskz reason, tax codes selection, tax codes provided, 'actual' plants abroad, terms plant abroad, company code country, company code, plants abroad, transaction obzt, plant abroad
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