diff --git a/src/main/java/org/openepics/names/rest/controller/old/DeviceNamesControllerV0.java b/src/main/java/org/openepics/names/rest/controller/old/DeviceNamesControllerV0.java
index 629995c6945ee1ce90e2c06a2987d4b7f100a50d..310cae9b70a69672219318ba3ee6ce720be5d569 100644
--- a/src/main/java/org/openepics/names/rest/controller/old/DeviceNamesControllerV0.java
+++ b/src/main/java/org/openepics/names/rest/controller/old/DeviceNamesControllerV0.java
@@ -123,7 +123,7 @@ public class DeviceNamesControllerV0 {
             deviceNameElements.add(DeviceNameElementUtil.getDeviceNameElement(name, holder));
         }
 
-        LOGGER.log(Level.FINE, "findNames, deviceNameElement	s.size: {0}", deviceNameElements.size());
+        LOGGER.log(Level.FINE, "findNames, deviceNameElement    s.size: {0}", deviceNameElements.size());
 
         return deviceNameElements;
     }
diff --git a/src/main/java/org/openepics/names/service/NamesService.java b/src/main/java/org/openepics/names/service/NamesService.java
index bd438712bed6eb63466bd3419bced586ef8df784..2d91491c82e5709a63e8b6e8fea0dea36d1f666a 100644
--- a/src/main/java/org/openepics/names/service/NamesService.java
+++ b/src/main/java/org/openepics/names/service/NamesService.java
@@ -59,6 +59,7 @@ import org.openepics.names.util.HolderRepositories;
 import org.openepics.names.util.HolderSystemDeviceStructure;
 import org.openepics.names.util.NameElementUtil;
 import org.openepics.names.util.NameUtil;
+import org.openepics.names.util.TextUtil;
 import org.openepics.names.util.ValidateUtil;
 import org.springframework.beans.factory.annotation.Autowired;
 import org.springframework.stereotype.Service;
@@ -151,7 +152,7 @@ public class NamesService {
 
         // do
         Date requested = new Date();
-        String requestedBy = "test who";
+        String requestedBy = TextUtil.TEST_WHO;
         final List<NameElement> createdNameElements = Lists.newArrayList();
         for (NameElementCommand nameElement : nameElements) {
             // create name within current transaction
@@ -415,7 +416,7 @@ public class NamesService {
         if (toBeChecked.getSystemgroupUuid() != null) {
             SystemGroup systemGroup = holderIRepositories.getSystemGroupRepository().findLatestNotDeletedByUuid(toBeChecked.getSystemgroupUuid().toString());
             ExceptionUtil.validateConditionDataNotAvailableException(systemGroup != null,
-                    "system group not available", name, null);
+                    TextUtil.SYSTEMGROUP_IS_NOT_AVAILABLE, name, null);
 
             if (systemGroup.isDeleted()) {
                 return Boolean.TRUE;
@@ -423,7 +424,7 @@ public class NamesService {
         } else if (toBeChecked.getSystemUuid() != null) {
             org.openepics.names.repository.model.System system = holderIRepositories.getSystemRepository().findLatestNotDeletedByUuid(toBeChecked.getSystemUuid().toString());
             ExceptionUtil.validateConditionDataNotAvailableException(system != null,
-                    "system not available", name, null);
+                    TextUtil.SYSTEM_IS_NOT_AVAILABLE, name, null);
 
             if (system.isDeleted()) {
                 return Boolean.TRUE;
@@ -431,7 +432,7 @@ public class NamesService {
 
             SystemGroup systemGroup = holderIRepositories.getSystemGroupRepository().findLatestNotDeletedByUuid(system.getParentUuid().toString());
             ExceptionUtil.validateConditionDataNotAvailableException(systemGroup != null,
-                    "system group not available", name, null);
+                    TextUtil.SYSTEMGROUP_IS_NOT_AVAILABLE, name, null);
 
             if (systemGroup.isDeleted()) {
                 return Boolean.TRUE;
@@ -439,7 +440,7 @@ public class NamesService {
         } else if (toBeChecked.getSubsystemUuid() != null) {
             Subsystem subsystem = holderIRepositories.getSubsystemRepository().findLatestNotDeletedByUuid(toBeChecked.getSubsystemUuid().toString());
             ExceptionUtil.validateConditionDataNotAvailableException(subsystem != null,
-                    "subsystem not available", name, null);
+                    TextUtil.SUBSYSTEM_IS_NOT_AVAILABLE, name, null);
 
             if (subsystem.isDeleted()) {
                 return Boolean.TRUE;
@@ -447,7 +448,7 @@ public class NamesService {
 
             org.openepics.names.repository.model.System system = holderIRepositories.getSystemRepository().findLatestNotDeletedByUuid(subsystem.getParentUuid().toString());
             ExceptionUtil.validateConditionDataNotAvailableException(system != null,
-                    "system not available", name, null);
+                    TextUtil.SYSTEM_IS_NOT_AVAILABLE, name, null);
 
             if (system.isDeleted()) {
                 return Boolean.TRUE;
@@ -455,7 +456,7 @@ public class NamesService {
 
             SystemGroup systemGroup = holderIRepositories.getSystemGroupRepository().findLatestNotDeletedByUuid(system.getParentUuid().toString());
             ExceptionUtil.validateConditionDataNotAvailableException(systemGroup != null,
-                    "system group not available", name, null);
+                    TextUtil.SYSTEMGROUP_IS_NOT_AVAILABLE, name, null);
 
             if (systemGroup.isDeleted()) {
                 return Boolean.TRUE;
@@ -465,7 +466,7 @@ public class NamesService {
         if (toBeChecked.getDevicetypeUuid() != null) {
             DeviceType deviceType = holderIRepositories.getDeviceTypeRepository().findLatestNotDeletedByUuid(toBeChecked.getDevicetypeUuid().toString());
             ExceptionUtil.validateConditionDataNotAvailableException(deviceType != null,
-                    "device type not available", name, null);
+                    TextUtil.DEVICETYPE_IS_NOT_AVAILABLE, name, null);
 
             if (deviceType.isDeleted()) {
                 return Boolean.TRUE;
@@ -473,7 +474,7 @@ public class NamesService {
 
             DeviceGroup deviceGroup = holderIRepositories.getDeviceGroupRepository().findLatestNotDeletedByUuid(deviceType.getParentUuid().toString());
             ExceptionUtil.validateConditionDataNotAvailableException(deviceGroup != null,
-                    "device group not available", name, null);
+                    TextUtil.DEVICEGROUP_IS_NOT_AVAILABLE, name, null);
 
             if (deviceGroup.isDeleted()) {
                 return Boolean.TRUE;
@@ -481,7 +482,7 @@ public class NamesService {
 
             Discipline discipline = holderIRepositories.getDisciplineRepository().findLatestNotDeletedByUuid(deviceType.getParentUuid().toString());
             ExceptionUtil.validateConditionDataNotAvailableException(discipline != null,
-                    "device group not available", name, null);
+                    TextUtil.DEVICEGROUP_IS_NOT_AVAILABLE, name, null);
 
             if (discipline.isDeleted()) {
                 return Boolean.TRUE;
@@ -630,7 +631,7 @@ public class NamesService {
 
         // do
         Date requested = new Date();
-        String requestedBy = "test who";
+        String requestedBy = TextUtil.TEST_WHO;
         final List<NameElement> updatedNameElements = Lists.newArrayList();
         for (NameElementCommand nameElement : nameElements) {
             // update not latest, not deleted
@@ -710,7 +711,7 @@ public class NamesService {
 
         // do
         Date requested = new Date();
-        String requestedBy = "test who";
+        String requestedBy = TextUtil.TEST_WHO;
         final List<NameElement> deletedNameElements = Lists.newArrayList();
         for (NameElementCommand nameElement : nameElements) {
             Name name = holderIRepositories.getNameRepository().findLatestByUuid(nameElement.getUuid().toString());
diff --git a/src/main/java/org/openepics/names/service/StructuresService.java b/src/main/java/org/openepics/names/service/StructuresService.java
index cb854921ce91ed3bef40010e9c8324e0032a1ea1..4bb6b9c97a0f31d9a46406f4bbfbde012a4e83c6 100644
--- a/src/main/java/org/openepics/names/service/StructuresService.java
+++ b/src/main/java/org/openepics/names/service/StructuresService.java
@@ -60,6 +60,7 @@ import org.openepics.names.util.HolderIRepositories;
 import org.openepics.names.util.HolderRepositories;
 import org.openepics.names.util.HolderSystemDeviceStructure;
 import org.openepics.names.util.StructureElementUtil;
+import org.openepics.names.util.TextUtil;
 import org.openepics.names.util.StructureElementUtil.StructureChoice;
 import org.openepics.names.util.ValidateUtil;
 import org.springframework.beans.factory.annotation.Autowired;
@@ -154,7 +155,7 @@ public class StructuresService {
 
         // do
         Date requested = new Date();
-        String requestedBy = "test who";
+        String requestedBy = TextUtil.TEST_WHO;
         final List<StructureElement> createdStructureElements = Lists.newArrayList();
         for (StructureElementCommand structureElement : structureElements) {
             // note
@@ -841,7 +842,7 @@ public class StructuresService {
 
         // do
         Date requested = new Date();
-        String requestedBy = "test who";
+        String requestedBy = TextUtil.TEST_WHO;
         final List<StructureElement> updatedStructureElements = Lists.newArrayList();
         for (StructureElementCommand structureElement : structureElements) {
             // note
@@ -967,7 +968,7 @@ public class StructuresService {
 
         // do
         Date requested = new Date();
-        String requestedBy = "test who";
+        String requestedBy = TextUtil.TEST_WHO;
         final List<StructureElement> deletedStructureElements = Lists.newArrayList();
         for (StructureElementCommand structureElement : structureElements) {
             String queryValue = structureElement.getUuid().toString();
@@ -1130,7 +1131,7 @@ public class StructuresService {
         //         set not latest for current latest
         //         set approved, latest for pending
         Date processed = new Date();
-        String processedBy = "test who";
+        String processedBy = TextUtil.TEST_WHO;
         final List<StructureElement> approvedStructureElements = Lists.newArrayList();
         for (StructureElementCommand structureElement : structureElements) {
             String queryValue = structureElement.getUuid().toString();
@@ -1352,7 +1353,7 @@ public class StructuresService {
 
         // do
         Date processed = new Date();
-        String processedBy = "test who";
+        String processedBy = TextUtil.TEST_WHO;
         final List<StructureElement> cancelledStructureElements = Lists.newArrayList();
         for (StructureElementCommand structureElement : structureElements) {
             String queryValue = structureElement.getUuid().toString();
@@ -1478,7 +1479,7 @@ public class StructuresService {
 
         // do
         Date processed = new Date();
-        String processedBy = "test who";
+        String processedBy = TextUtil.TEST_WHO;
         final List<StructureElement> rejectedStructureElements = Lists.newArrayList();
         for (StructureElementCommand structureElement : structureElements) {
             String queryValue = structureElement.getUuid().toString();
diff --git a/src/main/java/org/openepics/names/util/TextUtil.java b/src/main/java/org/openepics/names/util/TextUtil.java
index 462a68f6d974258f518cb5ed774ed2e77d8337a5..424d999c5f24a89baa09d341ce43424bede1a0cd 100644
--- a/src/main/java/org/openepics/names/util/TextUtil.java
+++ b/src/main/java/org/openepics/names/util/TextUtil.java
@@ -123,6 +123,9 @@ public class TextUtil {
 
     public static final String FILE_COULD_NOT_BE_PARSED                = "File could not be parsed";
 
+    // TODO check if necessary when authentication authorization is introduced
+    public static final String TEST_WHO                                = "test who";
+
     /**
      * This class is not to be instantiated.
      */