diff --git a/openbis_standard_technologies/dist/core-plugins/eln-lims/1/as/initialize-master-data.py b/openbis_standard_technologies/dist/core-plugins/eln-lims/1/as/initialize-master-data.py
index d632b954e816b6ffcead69a719a3f8c6d8ad65d4..f4f542edd3d09d4bd133709fe0e42ae4cc4d9ffe 100644
--- a/openbis_standard_technologies/dist/core-plugins/eln-lims/1/as/initialize-master-data.py
+++ b/openbis_standard_technologies/dist/core-plugins/eln-lims/1/as/initialize-master-data.py
@@ -25,7 +25,7 @@ helper = MasterDataRegistrationHelper(sys.path)
 api = CommonServiceProvider.getApplicationContext().getBean(ApplicationServerApi.INTERNAL_SERVICE_NAME)
 sessionToken = api.loginAsSystem()
 props = CustomASServiceExecutionOptions().withParameter('xls', helper.listXlsByteArrays())\
-    .withParameter('xls_name', 'ELN-LIMS').withParameter('update_mode', 'UPDATE_EXISTING')\
+    .withParameter('xls_name', 'ELN-LIMS').withParameter('update_mode', 'UPDATE_IF_EXISTS')\
     .withParameter('scripts', helper.getAllScripts())
 result = api.executeCustomASService(sessionToken, CustomASServiceCode("xls-import-api"), props);
 print("======================== master-data xls ingestion result ========================")
diff --git a/openbis_standard_technologies/dist/core-plugins/eln-lims/1/as/master-data/data-model.xls b/openbis_standard_technologies/dist/core-plugins/eln-lims/1/as/master-data/data-model.xls
index 8d7784125bad3226f67a0cf35266de503b5a48cb..4d69110b10b17aa7e664af2f3bc8fc636427f53f 100644
Binary files a/openbis_standard_technologies/dist/core-plugins/eln-lims/1/as/master-data/data-model.xls and b/openbis_standard_technologies/dist/core-plugins/eln-lims/1/as/master-data/data-model.xls differ