diff --git a/src/main/java/io/split/android/client/validators/FlagSetsValidatorImpl.java b/src/main/java/io/split/android/client/validators/FlagSetsValidatorImpl.java
index 5553eaa37..57642a6ec 100644
--- a/src/main/java/io/split/android/client/validators/FlagSetsValidatorImpl.java
+++ b/src/main/java/io/split/android/client/validators/FlagSetsValidatorImpl.java
@@ -66,7 +66,7 @@ public boolean isValid(String value) {
     }
 
     @Override
-    public Set<String> items(List<String> values, FlagSetsFilter flagSetsFilter) {
+    public Set<String> items(String method, List<String> values, FlagSetsFilter flagSetsFilter) {
         Set<String> setsToReturn = new HashSet<>();
 
         if (values == null || values.isEmpty()) {
@@ -74,11 +74,23 @@ public Set<String> items(List<String> values, FlagSetsFilter flagSetsFilter) {
         }
 
         for (String flagSet : values) {
+            if (flagSet.trim().length() != flagSet.length()) {
+                Logger.w(method + ": Flag Set name " + flagSet + " has extra whitespace, trimming");
+                flagSet = flagSet.trim();
+            }
+
+            if (!flagSet.toLowerCase().equals(flagSet)) {
+                Logger.w(method + ": Flag Set name "+flagSet+" should be all lowercase - converting string to lowercase");
+                flagSet = flagSet.toLowerCase();
+            }
+
             if (!isValid(flagSet)) {
+                Logger.w(method + ": you passed "+ flagSet +", Flag Set must adhere to the regular expressions "+ FLAG_SET_REGEX +". This means a Flag Set must be start with a letter, be in lowercase, alphanumeric and have a max length of 50 characters. "+ flagSet +" was discarded.");
                 continue;
             }
 
             if (flagSetsFilter != null && !flagSetsFilter.intersect(flagSet)) {
+                Logger.w(method + ": you passed Flag Set: "+ flagSet +" and is not part of the configured Flag set list, ignoring the request.");
                 continue;
             }
 
diff --git a/src/main/java/io/split/android/client/validators/SplitFilterValidator.java b/src/main/java/io/split/android/client/validators/SplitFilterValidator.java
index b5f0d1b2b..1e3255b84 100644
--- a/src/main/java/io/split/android/client/validators/SplitFilterValidator.java
+++ b/src/main/java/io/split/android/client/validators/SplitFilterValidator.java
@@ -11,7 +11,7 @@ public interface SplitFilterValidator {
 
     boolean isValid(String value);
 
-    Set<String> items(List<String> values, FlagSetsFilter flagSetsFilter);
+    Set<String> items(String method, List<String> values, FlagSetsFilter flagSetsFilter);
 
     class ValidationResult {
 
diff --git a/src/main/java/io/split/android/client/validators/TreatmentManagerImpl.java b/src/main/java/io/split/android/client/validators/TreatmentManagerImpl.java
index 23276e026..05469a2bf 100644
--- a/src/main/java/io/split/android/client/validators/TreatmentManagerImpl.java
+++ b/src/main/java/io/split/android/client/validators/TreatmentManagerImpl.java
@@ -191,7 +191,7 @@ public Map<String, String> getTreatmentsByFlagSet(@NonNull String flagSet, @Null
                 mValidationLogger.e(CLIENT_DESTROYED_MESSAGE, validationTag);
                 return controlTreatmentsForSplits(new ArrayList<>(names), validationTag);
             }
-            names = getNamesFromSet(Collections.singletonList(flagSet));
+            names = getNamesFromSet("getTreatmentsByFlagSet", Collections.singletonList(flagSet));
 
             long start = System.currentTimeMillis();
             try {
@@ -216,7 +216,7 @@ public Map<String, String> getTreatmentsByFlagSets(@NonNull List<String> flagSet
                 mValidationLogger.e(CLIENT_DESTROYED_MESSAGE, validationTag);
                 return controlTreatmentsForSplits(new ArrayList<>(names), validationTag);
             }
-            names = getNamesFromSet(flagSets);
+            names = getNamesFromSet("getTreatmentsByFlagSets", flagSets);
 
             long start = System.currentTimeMillis();
             try {
@@ -237,7 +237,7 @@ public Map<String, SplitResult> getTreatmentsWithConfigByFlagSet(@NonNull String
         String validationTag = ValidationTag.GET_TREATMENTS_WITH_CONFIG_BY_FLAG_SET;
         Set<String> names = new HashSet<>();
         try {
-            names = getNamesFromSet(Collections.singletonList(flagSet));
+            names = getNamesFromSet("getTreatmentsWithConfigByFlagSet", Collections.singletonList(flagSet));
             if (isClientDestroyed) {
                 mValidationLogger.e(CLIENT_DESTROYED_MESSAGE, validationTag);
                 return controlTreatmentsForSplitsWithConfig(new ArrayList<>(names), validationTag);
@@ -266,7 +266,7 @@ public Map<String, SplitResult> getTreatmentsWithConfigByFlagSets(@NonNull List<
                 mValidationLogger.e(CLIENT_DESTROYED_MESSAGE, validationTag);
                 return controlTreatmentsForSplitsWithConfig(new ArrayList<>(names), validationTag);
             }
-            names = getNamesFromSet(flagSets);
+            names = getNamesFromSet("getTreatmentsWithConfigByFlagSets", flagSets);
 
             long start = System.currentTimeMillis();
             try {
@@ -403,9 +403,9 @@ private void recordLatency(Method treatment, long startTime) {
     }
 
     @NonNull
-    private Set<String> getNamesFromSet(@NonNull List<String> flagSets) {
+    private Set<String> getNamesFromSet(@NonNull String method, @NonNull List<String> flagSets) {
 
-        Set<String> setsToEvaluate = mFlagSetsValidator.items(flagSets, mFlagSetsFilter);
+        Set<String> setsToEvaluate = mFlagSetsValidator.items(method, flagSets, mFlagSetsFilter);
 
         if (setsToEvaluate.isEmpty()) {
             return new HashSet<>();