diff --git a/indexer-core/src/main/java/org/opengroup/osdu/indexer/schema/converter/PropertiesProcessor.java b/indexer-core/src/main/java/org/opengroup/osdu/indexer/schema/converter/PropertiesProcessor.java
index 7894a9dc583a70a04b783806db6d07daf061b594..a0a71a3370fad6b291ca35b42497d241d50ecb0b 100644
--- a/indexer-core/src/main/java/org/opengroup/osdu/indexer/schema/converter/PropertiesProcessor.java
+++ b/indexer-core/src/main/java/org/opengroup/osdu/indexer/schema/converter/PropertiesProcessor.java
@@ -247,7 +247,7 @@ public class PropertiesProcessor {
 
     private Stream<Map<String, Object>> storageSchemaEntry(String kind, String path) {
         Preconditions.checkNotNullOrEmpty(path, "path cannot be null or empty");
-        Preconditions.checkNotNullOrEmpty(kind, "kind cannot be null or empty for path \'" + path + '\'' );
+        Preconditions.checkNotNullOrEmpty(kind, String.format("kind cannot be null or empty for path '%s'", path));
 
         Map<String, Object> map = new HashMap<>();
         map.put("kind", kind);
diff --git a/indexer-core/src/main/java/org/opengroup/osdu/indexer/schema/converter/SchemaToStorageFormatImpl.java b/indexer-core/src/main/java/org/opengroup/osdu/indexer/schema/converter/SchemaToStorageFormatImpl.java
index aa598288450d44daf81e1fbf7c739d74332a5883..e45e3df8d8272ba446e482d752f84c8267897839 100644
--- a/indexer-core/src/main/java/org/opengroup/osdu/indexer/schema/converter/SchemaToStorageFormatImpl.java
+++ b/indexer-core/src/main/java/org/opengroup/osdu/indexer/schema/converter/SchemaToStorageFormatImpl.java
@@ -116,15 +116,15 @@ public class SchemaToStorageFormatImpl implements SchemaToStorageFormat {
                             .collect(Collectors.toList()));
                 }
             } else {
-                throw new SchemaProcessingException("Schema doesn't have properties section, kind:");
+                throw new SchemaProcessingException(String.format("Schema doesn't have properties section, kind: %s", kind));
             }
         } else {
-            throw new SchemaProcessingException("Schema doesn't have data section, kind:" + kind);
+            throw new SchemaProcessingException(String.format("Schema doesn't have data section, kind: %s", kind));
         }
 
         if (!propertiesProcessor.getErrors().isEmpty()) {
-            throw new SchemaProcessingException( "Error(-s) occurred during parsing the schema with kind:" + kind
-                    + ", " + String.join(",", propertiesProcessor.getErrors()));
+            throw new SchemaProcessingException(String.format("Errors occurred during parsing the schema, kind: %s | errors: %s" ,
+                    kind, String.join(",", propertiesProcessor.getErrors())));
         }
 
         final Map<String, Object> result = new LinkedHashMap<>();
@@ -133,5 +133,4 @@ public class SchemaToStorageFormatImpl implements SchemaToStorageFormat {
 
         return result;
     }
-
 }
diff --git a/indexer-core/src/main/java/org/opengroup/osdu/indexer/schema/converter/tech.md b/indexer-core/src/main/java/org/opengroup/osdu/indexer/schema/converter/tech.md
deleted file mode 100644
index 35c7dd3b47be2806cb28a2f6534fb6a26f093d6a..0000000000000000000000000000000000000000
--- a/indexer-core/src/main/java/org/opengroup/osdu/indexer/schema/converter/tech.md
+++ /dev/null
@@ -1,113 +0,0 @@
-## Table of contests.
-
-1.  Purpose
-
-2.  Package details and main classes
-
-3.  Unit tests
-
-4.  Troubleshooting
-
-5.  Schema retrieval order
-    
-6.  Converter extensions/modifications
-
-#### Purpose
-The purpose of this document is to provide overview of the Schema
-converter from the technical point of view. If you need to know more
-about transformations, conversion rules, please see
-<https://community.opengroup.org/osdu/platform/system/indexer-service/-/blob/master/indexer-core/src/main/java/org/opengroup/osdu/indexer/schema/converter/readme.md>
-
-#### Package details and main classes
-Schema converter is in org.opengroup.osdu.indexer.schema.converter
-package.
-
-<table>
-<thead>
-<tr class="header">
-<th>Name</th>
-<th>Description</th>
-<th>Type</th>
-</tr>
-</thead>
-<tbody>
-<tr class="odd">
-<td>config</td>
-<td>Contains configuration classes, configuration can be changed via properties file</td>
-<td>package</td>
-</tr>
-<tr class="even">
-<td>exception</td>
-<td>Processing exceptions</td>
-<td>package</td>
-</tr>
-<tr class="odd">
-<td>Interfaces/ SchemaToStorageFormat.java</td>
-<td><p>Interface that provides</p>
-<p>convertToString(String schemaServiceFormat, String kind); method</p></td>
-<td>file</td>
-</tr>
-<tr class="even">
-<td>tags</td>
-<td>Supported tags</td>
-<td>package</td>
-</tr>
-<tr class="odd">
-<td>PropertiesProcessor.java</td>
-<td>Recursively processes items</td>
-<td>file</td>
-</tr>
-<tr class="even">
-<td>SchemaToStorageFormatImpl.java</td>
-<td>Parse json, calls PropertiesProcessor</td>
-<td>file</td>
-</tr>
-<tr class="odd">
-<td>Readme.md</td>
-<td></td>
-<td>file</td>
-</tr>
-</tbody>
-</table>
-
-Package members.
-
-#### Unit tests
-
-If you have any issues with schema (loading, conversion, etc.) you can
-easily create a unit test that checks a schema in
-SchemaToStorageFormatImplTest class.
-
-For instance
-```json
-@Test(expected = SchemaProcessingException.**class**)  
-public void wrongDefinitions() {  
-testSingleFile("/converter/bad-schema/wrong-definitions-and-missed-type.json"**,
-KIND);  
-}
-```
-Expects that schema is wrong
-
-testSingleFile loads a schema, tries to convert it, then compares it
-with expected storage schema that is loaded from &lt;filename&gt; +
-“.res” file.
-
-Pay attention to folderPassed() method it recursively processes a set of
-schemas in a folder.
-
-#### Troubleshooting.
-
-The latest schema converter tries to gather as much conversion errors as
-possible (the more the better). Please see logs if conversion not
-happens.
-
-If a processing of some schema generates unexpected errors take that
-schema and investigate with unit test as was described before.
-
-#### Converter extensions/modifications
-
-a) Add new tags to schema.converter.tags package
-
-b) Modify PropertiesProcessor
-
-c) Add/change unit and integration tests
\ No newline at end of file
diff --git a/indexer-core/src/main/java/org/opengroup/osdu/indexer/service/impl/SchemaProviderImpl.java b/indexer-core/src/main/java/org/opengroup/osdu/indexer/service/SchemaProviderImpl.java
similarity index 95%
rename from indexer-core/src/main/java/org/opengroup/osdu/indexer/service/impl/SchemaProviderImpl.java
rename to indexer-core/src/main/java/org/opengroup/osdu/indexer/service/SchemaProviderImpl.java
index 3f49f188f8e4694e0fef4a3e366634a8a2a701de..c462c78e86e0760df5db46ff232126ed503d5ce1 100644
--- a/indexer-core/src/main/java/org/opengroup/osdu/indexer/service/impl/SchemaProviderImpl.java
+++ b/indexer-core/src/main/java/org/opengroup/osdu/indexer/service/SchemaProviderImpl.java
@@ -12,7 +12,7 @@
 // See the License for the specific language governing permissions and
 // limitations under the License.
 
-package org.opengroup.osdu.indexer.service.impl;
+package org.opengroup.osdu.indexer.service;
 
 import com.google.api.client.http.HttpMethods;
 import org.apache.http.HttpStatus;
@@ -65,7 +65,7 @@ public class SchemaProviderImpl implements SchemaService {
         try {
             schemaServiceSchema = getFromSchemaService(kind);
         } catch (RuntimeException ex) {
-            log.error("Failed to get the schema from the Schema service, kind:" + kind + ", message:" + ex.getMessage(), ex);
+            log.error(String.format("Failed to get the schema from the Schema service, kind: %s | message: %s", kind, ex.getMessage(), ex));
             return null;
         }
 
@@ -106,5 +106,4 @@ public class SchemaProviderImpl implements SchemaService {
         
         return this.urlFetchService.sendRequest(request);
     }
-
 }
diff --git a/indexer-core/src/test/java/org/opengroup/osdu/indexer/service/impl/SchemaProviderImplTest.java b/indexer-core/src/test/java/org/opengroup/osdu/indexer/service/SchemaProviderImplTest.java
similarity index 98%
rename from indexer-core/src/test/java/org/opengroup/osdu/indexer/service/impl/SchemaProviderImplTest.java
rename to indexer-core/src/test/java/org/opengroup/osdu/indexer/service/SchemaProviderImplTest.java
index 020232985dcaa7569e0fa50d971fb65e1eb65700..9e6da1a355f2057eec76feaaa87ad47451a7ae52 100644
--- a/indexer-core/src/test/java/org/opengroup/osdu/indexer/service/impl/SchemaProviderImplTest.java
+++ b/indexer-core/src/test/java/org/opengroup/osdu/indexer/service/SchemaProviderImplTest.java
@@ -12,7 +12,7 @@
 // See the License for the specific language governing permissions and
 // limitations under the License.package org.opengroup.osdu.indexer.service.impl;
 
-package org.opengroup.osdu.indexer.service.impl;
+package org.opengroup.osdu.indexer.service;
 
 import com.fasterxml.jackson.core.type.TypeReference;
 import com.fasterxml.jackson.databind.ObjectMapper;
@@ -140,7 +140,7 @@ public class SchemaProviderImplTest {
         String kind = "tenant:test:test:1.0.0";
 
         SchemaProviderImpl schemaService = Mockito.mock(SchemaProviderImpl.class);
-        PowerMockito.when(schemaService.getSchema(any())).thenCallRealMethod();
+        when(schemaService.getSchema(any())).thenCallRealMethod();
 
         InOrder inOrder = inOrder(schemaService);
 
diff --git a/provider/indexer-gcp/src/test/java/org/opengroup/osdu/indexer/service/IndexerSchemaServiceTest.java b/provider/indexer-gcp/src/test/java/org/opengroup/osdu/indexer/service/IndexerSchemaServiceTest.java
index 6bae37e26cfb840db56275fe1a42f0afa8557677..631c840c22670a08200664c66aa8a0f82fc70ae6 100644
--- a/provider/indexer-gcp/src/test/java/org/opengroup/osdu/indexer/service/IndexerSchemaServiceTest.java
+++ b/provider/indexer-gcp/src/test/java/org/opengroup/osdu/indexer/service/IndexerSchemaServiceTest.java
@@ -29,7 +29,7 @@ import org.opengroup.osdu.indexer.provider.interfaces.ISchemaCache;
 import org.opengroup.osdu.core.common.model.indexer.IndexSchema;
 import org.opengroup.osdu.core.common.model.http.RequestStatus;
 import org.opengroup.osdu.core.common.search.IndicesService;
-import org.opengroup.osdu.indexer.service.impl.SchemaProviderImpl;
+import org.opengroup.osdu.indexer.service.SchemaProviderImpl;
 import org.opengroup.osdu.indexer.util.ElasticClientHandler;
 import org.opengroup.osdu.core.common.search.ElasticIndexNameResolver;
 import org.powermock.core.classloader.annotations.PrepareForTest;
diff --git a/provider/indexer-reference/src/test/java/org/opengroup/osdu/indexer/service/IndexerSchemaServiceTest.java b/provider/indexer-reference/src/test/java/org/opengroup/osdu/indexer/service/IndexerSchemaServiceTest.java
index 4ce6eb4e8af4a45eddbc163baad9bb9cd6c2ef12..3b59eb203d3c9bd4391b0a25325ec30e70d06257 100644
--- a/provider/indexer-reference/src/test/java/org/opengroup/osdu/indexer/service/IndexerSchemaServiceTest.java
+++ b/provider/indexer-reference/src/test/java/org/opengroup/osdu/indexer/service/IndexerSchemaServiceTest.java
@@ -54,7 +54,7 @@ import org.opengroup.osdu.core.common.model.indexer.OperationType;
 import org.opengroup.osdu.core.common.search.ElasticIndexNameResolver;
 import org.opengroup.osdu.core.common.search.IndicesService;
 import org.opengroup.osdu.indexer.provider.interfaces.ISchemaCache;
-import org.opengroup.osdu.indexer.service.impl.SchemaProviderImpl;
+import org.opengroup.osdu.indexer.service.SchemaProviderImpl;
 import org.opengroup.osdu.indexer.util.ElasticClientHandler;
 import org.powermock.core.classloader.annotations.PrepareForTest;
 import org.springframework.test.context.junit4.SpringRunner;