Make tax required on tax line
Since #6013 (closed), tax line has meaning only if a tax is set (otherwise they are never shown on tax code reports).
So I think we should make it required to avoid misunderstanding on the usage of tax line.
Since #6013 (closed), tax line has meaning only if a tax is set (otherwise they are never shown on tax code reports).
So I think we should make it required to avoid misunderstanding on the usage of tax line.