diff --git a/locale/de.po b/locale/de.po
index 5d55abe..2e027be 100644
--- a/locale/de.po
+++ b/locale/de.po
@@ -50,6 +50,10 @@ msgctxt "model:ir.message,text:msg_missing_url"
 msgid "URL for the online source '%(oname)s' is missing."
 msgstr "URL für die Onlinequelle '%(oname)s' fehlt."
 
+msgctxt "model:ir.message,text:msg_bug_in_regexquery"
+msgid "Error in regex code of field '%(fname)s': %(errmsg)s [%(code)s]"
+msgstr "Fehler in Regex-Code des Feldes '%(fname)s': %(errmsg)s [%(code)s]"
+
 
 ##############
 # ir.ui.menu #
diff --git a/locale/en.po b/locale/en.po
index 7e0923e..7d76175 100644
--- a/locale/en.po
+++ b/locale/en.po
@@ -38,6 +38,10 @@ msgctxt "model:ir.message,text:msg_missing_url"
 msgid "URL for the online source '%(oname)s' is missing."
 msgstr "URL for the online source '%(oname)s' is missing."
 
+msgctxt "model:ir.message,text:msg_bug_in_regexquery"
+msgid "Error in regex code of field '%(fname)s': %(errmsg)s [%(code)s]"
+msgstr "Error in regex code of field '%(fname)s': %(errmsg)s [%(code)s]"
+
 msgctxt "model:ir.ui.menu,name:menu_investment"
 msgid "Investment"
 msgstr "Investment"
@@ -294,6 +298,18 @@ msgctxt "selection:investment.asset,updtdays:"
 msgid "Mon - Sun"
 msgstr "Mon - Sun"
 
+msgctxt "field:investment.asset,updturl:"
+msgid "URL"
+msgstr "URL"
+
+msgctxt "help:investment.asset,updturl:"
+msgid "URL for data retrieval."
+msgstr "URL for data retrieval."
+
+msgctxt "field:investment.asset,updturl_enable:"
+msgid "URL required"
+msgstr "URL required"
+
 msgctxt "model:investment.asset_source_rel,name:"
 msgid "Asset Source Relation"
 msgstr "Asset Source Relation"
diff --git a/message.xml b/message.xml
index 2ef9571..2d681ef 100644
--- a/message.xml
+++ b/message.xml
@@ -23,6 +23,9 @@ full copyright notices and license terms. -->
         <record model="ir.message" id="msg_missing_url">
             <field name="text">URL for the online source '%(oname)s' is missing.</field>
         </record>
+        <record model="ir.message" id="msg_bug_in_regexquery">
+            <field name="text">Error in regex code of field '%(fname)s': %(errmsg)s [%(code)s]</field>
+        </record>
 
     </data>
 </tryton>
diff --git a/onlinesource.py b/onlinesource.py
index a74696a..4060ae4 100644
--- a/onlinesource.py
+++ b/onlinesource.py
@@ -260,6 +260,15 @@ class OnlineSource(ModelSQL, ModelView):
         """
         pass
 
+    @classmethod
+    def validate(cls, records):
+        """ check regex-code
+        """
+        for record in records:
+            for x in ['rgxdate', 'rgxrate', 'rgxident']:
+                if x:
+                    record.get_regex_result('', x)
+
     @classmethod
     def run_query_method(cls, osource, isin, nsin, symbol, url, debug=False):
         """ run selected query to retrive data
@@ -380,13 +389,22 @@ class OnlineSource(ModelSQL, ModelView):
     def get_regex_result(self, html_text, field_name):
         """ run regex on html-text, convert result
         """
+        OSource = Pool().get('investment.source')
+
         rgxcode = getattr(self, field_name) or ''
         if len(rgxcode) == 0:
             return None
 
-        search_result = re.compile(rgxcode).search(html_text)
-        if search_result is None:
-            return None
+        try:
+            search_result = re.compile(rgxcode).search(html_text)
+            if search_result is None:
+                return None
+        except Exception as e1:
+            raise UserError(gettext(
+                'investment.msg_bug_in_regexquery',
+                errmsg=str(e1),
+                fname=getattr(OSource, field_name).string,
+                code=rgxcode))
 
         try:
             result = search_result.group(1)
diff --git a/tests/source.py b/tests/source.py
index f784e4c..43ac22b 100644
--- a/tests/source.py
+++ b/tests/source.py
@@ -6,6 +6,7 @@
 from trytond.tests.test_tryton import with_transaction
 from trytond.pool import Pool
 from trytond.transaction import Transaction
+from trytond.exceptions import UserError
 from decimal import Decimal
 from datetime import time, date, datetime
 from unittest.mock import MagicMock
@@ -131,5 +132,54 @@ High 34,87 EUR
             'rgxdate'
             ), date(2022, 3, 14))
 
+    @with_transaction()
+    def test_waitlist_source_check_regex_validate(self):
+        """ create source, check validation of regex-code
+        """
+        pool = Pool()
+        OSource = pool.get('investment.source')
+
+        self.assertRaisesRegex(
+            UserError,
+            r"Error in regex code of field 'Date': nothing to repeat " +
+            r"at position 0 \[\*+ multiple repeat\]",
+            OSource.create,
+            [{
+                'name': 'Check date',
+                'rgxdate': '** multiple repeat',
+                'rgxrate': 'rate -- multiple repeat',
+                'rgxident': 'identifiert ** multiple repeat',
+            }])
+
+        self.assertRaisesRegex(
+            UserError,
+            r"Error in regex code of field 'Rate': multiple repeat " +
+            r"at position 6 \[rate \*+ multiple repeat\]",
+            OSource.create,
+            [{
+                'name': 'Check rate',
+                'rgxdate': '-- multiple repeat',
+                'rgxrate': 'rate ** multiple repeat',
+                'rgxident': 'identifiert -- multiple repeat',
+            }])
+
+        self.assertRaisesRegex(
+            UserError,
+            r"Error in regex code of field 'Identifier': multiple " +
+            r"repeat at position 13 \[identifiert \*+ multiple repeat\]",
+            OSource.create,
+            [{
+                'name': 'Check rgxident',
+                'rgxdate': '-- multiple repeat',
+                'rgxrate': 'rate -- multiple repeat',
+                'rgxident': 'identifiert ** multiple repeat',
+            }])
+
+        OSource.create([{
+            'name': 'Check rgxident',
+            'rgxdate': '-- multiple repeat',
+            'rgxrate': 'rate -- multiple repeat',
+            'rgxident': 'identifiert -- multiple repeat',
+            }])
 
 # end SourceTestCase