Before this commit, when a client had 1+ posted invoice he could still modify
his address, including his country. The country can have as much fiscal
implications for the Accounting as the Tax ID (both fields are used in the
Fiscal Positions mapping). For that reason, once an invoice has been made for a
customer, we should not let him change his country freely. This can still be
done in the back-end, but should not be possible in the front-end.
Also changing a bit the message to include the new read only on the country.
closesodoo/odoo#142910
Task: 3603353
Signed-off-by: John Laterre (jol) <jol@odoo.com>
Maximilien (malb)
1be6866b15