Correct phrasing

account_permanent_lock_move/README.rst

@@ -8,15 +8,16 @@ Permanent Lock Move
 
 This module extends the functionality of the basic "lock date"
 functionality in invoicing, in order to add a more definitive
-lock date (which does not allow to be set at a previous date,
-or emptied, and only accepts unposted moves)
+lock date (which cannot be empty or set in the past, and only
+accepts unposted moves)
 
 Configuration
 =============
 
 To configure this module, you need to:
 
-* Go to Invoicing -> Settings, and set the Permanent Lock Date.
+#. Go to Invoicing -> Settings
+#. Set the Permanent Lock Date.
 
 .. image:: https://odoo-community.org/website/image/ir.attachment/5784_f2813bd/datas
    :alt: Try me on Runbot

account_permanent_lock_move/wizard/permanent_lock_date_wizard.py

@@ -28,8 +28,8 @@ class PermanentLockDateWizard(models.TransientModel):
                 ('state', '=', 'draft')])
         if moves:
             raise UserError(
-                _("You cannot permanently lock since entries "
-                  "are still unposted before this date.")
+                _("You cannot set the permanent lock date since entries are "
+                  "still unposted before this date.")
             )
 
         company.permanent_lock_date = self.lock_date