diff --git a/src/core/common/client.go b/src/core/common/client.go
index e83a2494..1c3c159c 100644
--- a/src/core/common/client.go
+++ b/src/core/common/client.go
@@ -69,7 +69,7 @@ func limitConcurrentRequests(requestKey string, limit int) bool {
 	currentCount := count.(int)
 
 	if currentCount >= limit {
-		fmt.Printf("[%s] requests for %s \n", currentCount, requestKey)
+		fmt.Printf("[%d] requests for %s \n", currentCount, requestKey)
 		return false
 	}
 
diff --git a/src/core/common/config.go b/src/core/common/config.go
index f2d1abc3..dd10ebfa 100644
--- a/src/core/common/config.go
+++ b/src/core/common/config.go
@@ -248,15 +248,13 @@ func GetConfig(id string) (model.ConfigInfo, error) {
 	res := model.ConfigInfo{}
 
 	check, err := CheckConfig(id)
-	errString := id + " config is not found from Key-value store. Envirionment variable will be used."
-
 	if !check {
-		err := fmt.Errorf(errString)
+		err = fmt.Errorf("config '%s' not found in key-value store: no configuration data exists, will fallback to environment variables", id)
 		return res, err
 	}
 
 	if err != nil {
-		err := fmt.Errorf(errString)
+		err := fmt.Errorf("failed to check config '%s': configuration validation error - %v", id, err)
 		return res, err
 	}
 
@@ -264,7 +262,7 @@ func GetConfig(id string) (model.ConfigInfo, error) {
 
 	keyValue, err := kvstore.GetKv(key)
 	if err != nil {
-		err := fmt.Errorf(errString)
+		err := fmt.Errorf("failed to retrieve config '%s' from key-value store: %v (path: %s)", id, err, key)
 		return res, err
 	}
 
@@ -272,7 +270,7 @@ func GetConfig(id string) (model.ConfigInfo, error) {
 
 	err = json.Unmarshal([]byte(keyValue.Value), &res)
 	if err != nil {
-		err := fmt.Errorf(errString)
+		err := fmt.Errorf("failed to parse config '%s': invalid JSON format in key-value store - %v (raw value: %s)", id, err, keyValue.Value)
 		return res, err
 	}
 	return res, nil