Add missing file in last commit.

move.py

@@ -0,0 +1,19 @@
+# The COPYRIGHT file at the top level of this repository contains the full
+# copyright notices and license terms.
+from trytond.pool import PoolMeta
+from trytond.i18n import gettext
+from trytond.exceptions import UserError
+
+
+class CancelMoves(metaclass=PoolMeta):
+    __name__ = 'account.move.cancel'
+
+    def transition_cancel(self):
+        moves = self.records
+        for move in moves:
+            if move.origin is not None:
+                raise UserError(gettext(
+                    'account_es.msg_cancel_move_with_origin',
+                    move=move.rec_name,
+                    origin=move.origin.rec_name))
+        return super().transition_cancel()