diff --git a/CONTRIBUTING.md b/CONTRIBUTING.md
index 534bb2e..ef7e7ed 100644
--- a/CONTRIBUTING.md
+++ b/CONTRIBUTING.md
@@ -41,4 +41,4 @@ Here is a checklist for testing the CI/CD.
   * Run the docker image using `docker run -p 8080:8080 wearefrank/webformulierenverwerker:3.2.1`. Check the name of the docker container you started using `docker ps -a`. Login to the docker container using `docker exec -it <container name> bash`. Check that `/opt/frank/resources/BuildInfo.property` and `/opt/frank/configurations/WebformulierenVerwerker/BuildInfo.properties` contain the right version and the right date.
 * Check a breaking change like above. This should update the major version.
 * Do a commit with \[skip ci\] in the commit message. It should not make a release and it should not push a docker image.
-* Make a pull request. Check that no release is made and that no docker image is pushed.
\ No newline at end of file
+* Make a pull request. Check that no release is made and that no docker image is pushed.
diff --git a/configurations/WebformulierenVerwerker/Configuration_WebformulierenVerwerker.xml b/configurations/WebformulierenVerwerker/Configuration_WebformulierenVerwerker.xml
index 903e173..814fde7 100644
--- a/configurations/WebformulierenVerwerker/Configuration_WebformulierenVerwerker.xml
+++ b/configurations/WebformulierenVerwerker/Configuration_WebformulierenVerwerker.xml
@@ -84,6 +84,8 @@
                 <Exit name="EXCEPTION" state="ERROR" />
             </Exits>
 
+            <Locker objectId="opslaanInkNatuurlijkPersoon" />
+
             <XsltPipe name="ConvertToConnectRequest" styleSheetName="xsl/Message2Connect.xsl">
              	<Param name="username" authAlias="corsa-soap.connect" pattern="{username}"/>
              	<Param name="password" authAlias="corsa-soap.connect" pattern="{password}"/>
@@ -365,6 +367,8 @@
                 <Exit name="EXCEPTION" state="ERROR" />
             </Exits>
 
+            <Locker objectId="opslaanBijlage" />
+
             <XsltPipe name="ConvertToConnectRequest" styleSheetName="xsl/Message2Connect.xsl">
              	<Param name="username" authAlias="corsa-soap.connect" pattern="{username}"/>
              	<Param name="password" authAlias="corsa-soap.connect" pattern="{password}"/>
@@ -594,6 +598,8 @@
                 <Exit name="EXCEPTION" state="ERROR" />
             </Exits>
 
+            <Locker objectId="opslaanInkNatuurlijkPersoon" />
+
             <XsltPipe name="ConvertToConnectRequest" styleSheetName="xsl/Message2Connect.xsl">
              	<Param name="username" authAlias="corsa-soap.connect" pattern="{username}"/>
              	<Param name="password" authAlias="corsa-soap.connect" pattern="{password}"/>