diff --git a/pyramid_oereb/contrib/data_sources/oereblex/sources/plr_oereblex.py b/pyramid_oereb/contrib/data_sources/oereblex/sources/plr_oereblex.py
index 007e12ada8..709885d8a6 100644
--- a/pyramid_oereb/contrib/data_sources/oereblex/sources/plr_oereblex.py
+++ b/pyramid_oereb/contrib/data_sources/oereblex/sources/plr_oereblex.py
@@ -97,15 +97,15 @@ def document_records_from_oereblex(self, params, geolink, law_status, oereblex_p
         log.debug("document_records_from_oereblex() start, GEO-Link {}, law status {}, oereblex_params {}"
                   .format(geolink, law_status.code, oereblex_params))
         identifier = '{}{}{}'.format(geolink, law_status.code, params.language)
-        if identifier in self._queried_geolinks:
+        if identifier in self._queried_geolinks[params.identifier]:
             log.debug('skip querying this geolink "{}" because it was fetched already.'.format(identifier))
             log.debug('use already queried instead')
         else:
             self._oereblex_source.read(params, geolink, law_status, oereblex_params)
             log.debug("document_records_from_oereblex() returning {} records"
                       .format(len(self._oereblex_source.records)))
-            self._queried_geolinks[identifier] = self._oereblex_source.records
-        return self._queried_geolinks[identifier]
+            self._queried_geolinks[params.identifier][identifier] = self._oereblex_source.records
+        return self._queried_geolinks[params.identifier][identifier]
 
     def collect_related_geometries_by_real_estate(self, session, real_estate):
         """
@@ -133,6 +133,10 @@ def collect_related_geometries_by_real_estate(self, session, real_estate):
         ).all()
 
     def read(self, params, real_estate, bbox):
-        # resetting the local per request cache of queried oereblex links
-        self._queried_geolinks = {}
-        return super(DatabaseOEREBlexSource, self).read(params, real_estate, bbox)
+        # adding a local cache depending on the request identifier
+        self._queried_geolinks[params.identifier] = {}
+        # calling the original logic
+        result = super(DatabaseOEREBlexSource, self).read(params, real_estate, bbox)
+        # removing the cache after work is done
+        del self._queried_geolinks[params.identifier]
+        return result
diff --git a/pyramid_oereb/core/views/webservice.py b/pyramid_oereb/core/views/webservice.py
index d12b19f793..f1dc896a3d 100644
--- a/pyramid_oereb/core/views/webservice.py
+++ b/pyramid_oereb/core/views/webservice.py
@@ -1,6 +1,8 @@
 # -*- coding: utf-8 -*-
 
 import logging
+from uuid import uuid4
+
 # import yappi
 import qrcode
 import io
@@ -637,6 +639,8 @@ def __init__(self, response_format, with_geometry=False, images=False, signed=Fa
         self.__topics__ = topics
         self.__extract_url__ = extract_url
         self.__qr_code_ref__ = qr_code_ref
+        #uniquely identifier to reference the original request in the pyramid_oereb system
+        self.identifier = str(uuid4())
 
     def set_identdn(self, identdn):
         """