diff --git a/issue6764.diff b/issue6764.diff
new file mode 100644
index 0000000..14da042
--- /dev/null
+++ b/issue6764.diff
@@ -0,0 +1,52 @@
+diff -r 4c5035111f5f trytond/trytond/modules/stock/move.py
+--- a/trytond/trytond/modules/stock/move.py	Thu Sep 14 17:48:18 2017 +0200
++++ b/trytond/trytond/modules/stock/move.py	Fri Sep 15 09:19:22 2017 +0200
+@@ -1,6 +1,7 @@
+ # This file is part of Tryton.  The COPYRIGHT file at the top level of
+ # this repository contains the full copyright notices and license terms.
+ import datetime
++import hashlib
+ import operator
+ from decimal import Decimal
+ from functools import partial
+@@ -189,11 +190,13 @@
+                 | Eval('shipment'))
+             }, depends=['state', 'shipment'],
+         select=True)
+-    effective_date = fields.Date("Effective Date", readonly=True, select=True,
++    effective_date = fields.Date("Effective Date", select=True,
+         states={
+             'required': Eval('state') == 'done',
++            'readonly': (Eval('state').in_(['cancel', 'done'])
++                | Eval('shipment')),
+             },
+-        depends=['state'])
++        depends=['state', 'shipment'])
+     state = fields.Selection([
+         ('staging', 'Staging'),
+         ('draft', 'Draft'),
+@@ -737,12 +740,18 @@
+             types = cls.check_origin_types()
+         if not types:
+             return
+-        for move in moves:
+-            if ((move.from_location.type in types
+-                        or move.to_location.type in types)
+-                    and not move.origin):
+-                cls.raise_user_warning('%s.done' % move,
+-                    'no_origin', move.rec_name)
++
++        def no_origin(move):
++            return ((move.from_location.type in types) ^
++                (move.to_location.type in types)
++                and not move.origin)
++        moves = filter(no_origin, moves)
++        if moves:
++            names = ', '.join(m.rec_name for m in moves[:5])
++            if len(moves) > 5:
++                names += '...'
++            warning_name = '%s.done' % hashlib.md5(str(moves)).hexdigest()
++            cls.raise_user_warning(warning_name, 'no_origin', names)
+
+     def pick_product(self, location_quantities):
+         """
diff --git a/series b/series
index 113daad..b9d4969 100644
--- a/series
+++ b/series
@@ -58,3 +58,4 @@ issue5877.diff # [trytond] - Improve ModelStorage.search_count by using no order
 statement_of_account.diff  # [account] - remove context and show all lines on general_ledger_lines
 issue6371.diff # [stock] - Do not set effective_date on assign
 issue5891.diff # [stock] - Allow using view locations in cancelled stock moves
+issue6764.diff # [stock] - Setting initial stock