In my openerp setup, I have a parent company and its two child companies. Issue is Warehouse manager of a child company can't create reordering rule. When he tried create reordering rule I got an error

2013-06-18 15:48:53,742 1332 ←[1;33m←[1;49mWARNING←[0m None openerp.osv.orm: Access Denied by record rules for operation: read, uid: 4, model: stock.warehouse 2013-06-18 15:48:53,796 1332 ←[1;31m←[1;49mERROR←[0m None openerp.netsvc: Access Denied The requested operation cannot be completed due to security restrictions. Please contact your system administrator.

(Document type: Warehouse, Operation: read) Traceback (most recent call last): File "C:\OpenErp\openerp\openobject-server\openerp\netsvc.py", line 361, in dispatch_rpc result = ExportService.getService(service_name).dispatch(method, params) File "C:\OpenErp\openerp\openobject-server\openerp\service\web_services.py", line 585, in dispatch res = fn(db, uid, params) File "C:\OpenErp\openerp\openobject-server\openerp\osv\osv.py", line 167, in execute_kw return self.execute(db, uid, obj, method, *args, *kw or {}) File "C:\OpenErp\openerp\openobject-server\openerp\osv\osv.py", line 123, in wrapper raise except_osv(inst.name, inst.value) except_osv: (u'Access Denied', u'The requested operation cannot be completed due to security restrictions. Please contact your system administrator.\n\n(Document type: Warehouse, Operation: read)')

c:\openerp\openerp\openobject-server\openerp\osv\osv.py(123)wrapper() -> raise except_osv(inst.name, inst.value)

But warehouse manager of parent company can create reordering rule. What is is the issue.??