minor fix

collection.py

@@ -9,6 +9,8 @@ from trytond.wizard import Wizard, StateView, Button, StateAction, StateReport
 from trytond.report import Report
 from decimal import Decimal
 import copy
+from .exceptions import ProcedureError
+from trytond.i18n import gettext
 
 _STATES = {
     'readonly': Eval('state') == 'done',
@@ -732,6 +734,8 @@ class PortfolioStatusReport(Report):
                 ], fields_names=['accounts'])
             for procedure in procedures:
                 accounts.extend(list(procedure['accounts']))
+            if not accounts:
+                raise ProcedureError(gettext('collection.msg_missing_account_procedure'))
             dom_invoices.append(['account', 'in', accounts])
         order = [('party.name', 'DESC'), ('invoice_date', 'ASC')]
         invoices = Invoice.search(dom_invoices, order=order)

exceptions.py

@@ -0,0 +1,9 @@
+# This file is part of Tryton.  The COPYRIGHT file at the top level of
+# this repository contains the full copyright notices and license terms.
+
+from trytond.exceptions import UserError, UserWarning
+from trytond.model.exceptions import ValidationError
+
+
+class ProcedureError(UserError):
+    pass

message.xml

@@ -0,0 +1,11 @@
+<?xml version="1.0"?>
+<!-- This file is part of Tryton.  The COPYRIGHT file at the top level of
+this repository contains the full copyright notices and license terms. -->
+<tryton>
+    <data grouped="1">
+        <record model="ir.message" id="msg_missing_account_procedure">
+            <field name="text">Missing the configuration accounts in procedure selected.</field>
+        </record>
+
+    </data>
+</tryton>

tryton.cfg

@@ -10,3 +10,4 @@ depends:
 xml:
     collection.xml
     configuration.xml
+    message.xml