diff --git a/.gitignore b/.gitignore
index e2db29849..bb86ade8d 100644
--- a/.gitignore
+++ b/.gitignore
@@ -11,7 +11,8 @@
 .cache
 target
 obp-api/src/main/resources/
-obp-api/src/test/resources/
+obp-api/src/test/resources/**
+!obp-api/src/test/resources/frozen_type_meta_data
 *.iml
 obp-api/src/main/resources/log4j.properties
 obp-api/src/main/scripts/kafka/kafka_*
diff --git a/obp-api/src/main/scala/code/api/APIBuilder/swagger/APIBuilderSwagger.scala b/obp-api/src/main/scala/code/api/APIBuilder/swagger/APIBuilderSwagger.scala
index cab09d1d8..454a5c93a 100644
--- a/obp-api/src/main/scala/code/api/APIBuilder/swagger/APIBuilderSwagger.scala
+++ b/obp-api/src/main/scala/code/api/APIBuilder/swagger/APIBuilderSwagger.scala
@@ -33,8 +33,7 @@ import net.liftweb.json.{JArray, JValue}
 
 import scala.meta._
 
-object APIBuilderSwagger
-{
+object APIBuilderSwagger {
   def main(args: Array[String]): Unit = overwriteApiCode(apiSource,jsonFactorySource)
   val jsonJValueFromFile: JValue = APIUtil.getJValueFromFile("src/main/scala/code/api/APIBuilder/swagger/swaggerResource.json")
 
diff --git a/obp-api/src/main/scala/code/api/util/ScannedApis.scala b/obp-api/src/main/scala/code/api/util/ScannedApis.scala
index 2dd96c9b7..d92bc633d 100644
--- a/obp-api/src/main/scala/code/api/util/ScannedApis.scala
+++ b/obp-api/src/main/scala/code/api/util/ScannedApis.scala
@@ -21,5 +21,8 @@ object ScannedApis {
   /**
     * this map value are all scanned objects those extends ScannedApiVersion, the key is it apiVersion field
     */
-  lazy val versionMapScannedApis: Map[ScannedApiVersion, ScannedApis] = ClassScanUtils.getSubTypeObjects(classOf[ScannedApis]).map(it=> (it.apiVersion, it)).toMap
+  lazy val versionMapScannedApis: Map[ScannedApiVersion, ScannedApis] =
+    ClassScanUtils.getSubTypeObjects[ScannedApis]
+    .map(it=> (it.apiVersion, it))
+    .toMap
 }
diff --git a/obp-api/src/main/scala/code/api/util/VersionedOBPApis.scala b/obp-api/src/main/scala/code/api/util/VersionedOBPApis.scala
new file mode 100644
index 000000000..49d1b5221
--- /dev/null
+++ b/obp-api/src/main/scala/code/api/util/VersionedOBPApis.scala
@@ -0,0 +1,15 @@
+package code.api.util
+
+import code.api.util.APIUtil.{OBPEndpoint, ResourceDoc}
+
+import scala.collection.mutable.ArrayBuffer
+
+trait VersionedOBPApis {
+  def version : ApiVersion
+
+  def versionStatus: String
+
+  def allResourceDocs: ArrayBuffer[ResourceDoc]
+
+  def routes: List[OBPEndpoint]
+}
diff --git a/obp-api/src/main/scala/code/api/v1_2_1/OBPAPI1.2.1.scala b/obp-api/src/main/scala/code/api/v1_2_1/OBPAPI1.2.1.scala
index 55f48a034..5c7b8bc80 100644
--- a/obp-api/src/main/scala/code/api/v1_2_1/OBPAPI1.2.1.scala
+++ b/obp-api/src/main/scala/code/api/v1_2_1/OBPAPI1.2.1.scala
@@ -28,12 +28,12 @@ package code.api.v1_2_1
 
 import code.api.OBPRestHelper
 import code.api.util.APIUtil.{OBPEndpoint, ResourceDoc, getAllowedEndpoints}
-import code.api.util.ApiVersion
+import code.api.util.{ApiVersion, VersionedOBPApis}
 import code.util.Helper.MdcLoggable
 
 // Added so we can add resource docs for this version of the API
 
-object OBPAPI1_2_1 extends OBPRestHelper with APIMethods121 with MdcLoggable {
+object OBPAPI1_2_1 extends OBPRestHelper with APIMethods121 with MdcLoggable with VersionedOBPApis{
 
 
   val version : ApiVersion = ApiVersion.v1_2_1  //    "1.2.1"
diff --git a/obp-api/src/main/scala/code/api/v1_3_0/OBPAPI1_3_0.scala b/obp-api/src/main/scala/code/api/v1_3_0/OBPAPI1_3_0.scala
index ab451b6b5..28dcf5f1a 100644
--- a/obp-api/src/main/scala/code/api/v1_3_0/OBPAPI1_3_0.scala
+++ b/obp-api/src/main/scala/code/api/v1_3_0/OBPAPI1_3_0.scala
@@ -2,7 +2,7 @@ package code.api.v1_3_0
 
 import code.api.OBPRestHelper
 import code.api.util.APIUtil.{OBPEndpoint, ResourceDoc, getAllowedEndpoints}
-import code.api.util.ApiVersion
+import code.api.util.{ApiVersion, VersionedOBPApis}
 import code.api.v1_2_1.APIMethods121
 import code.util.Helper.MdcLoggable
 
@@ -11,7 +11,7 @@ import code.util.Helper.MdcLoggable
 
 //has APIMethods121 as all api calls that went unchanged from 1.2.1 to 1.3.0 will use the old
 //implementation
-object OBPAPI1_3_0 extends OBPRestHelper with APIMethods130 with APIMethods121 with MdcLoggable {
+object OBPAPI1_3_0 extends OBPRestHelper with APIMethods130 with APIMethods121 with MdcLoggable with VersionedOBPApis{
 
   val version : ApiVersion = ApiVersion.v1_3_0 //  "1.3.0"
   val versionStatus = "STABLE"
diff --git a/obp-api/src/main/scala/code/api/v1_4_0/OBPAPI1_4_0.scala b/obp-api/src/main/scala/code/api/v1_4_0/OBPAPI1_4_0.scala
index 18fabf9b3..73e97db0a 100644
--- a/obp-api/src/main/scala/code/api/v1_4_0/OBPAPI1_4_0.scala
+++ b/obp-api/src/main/scala/code/api/v1_4_0/OBPAPI1_4_0.scala
@@ -2,11 +2,11 @@ package code.api.v1_4_0
 
 import code.api.OBPRestHelper
 import code.api.util.APIUtil.{OBPEndpoint, ResourceDoc, getAllowedEndpoints}
-import code.api.util.ApiVersion
+import code.api.util.{ApiVersion, VersionedOBPApis}
 import code.util.Helper.MdcLoggable
 
 
-object OBPAPI1_4_0 extends OBPRestHelper with APIMethods140 with MdcLoggable {
+object OBPAPI1_4_0 extends OBPRestHelper with APIMethods140 with MdcLoggable with VersionedOBPApis{
 
   val version : ApiVersion = ApiVersion.v1_4_0 //"1.4.0"
   val versionStatus = "STABLE"
diff --git a/obp-api/src/main/scala/code/api/v2_0_0/OBPAPI2_0_0.scala b/obp-api/src/main/scala/code/api/v2_0_0/OBPAPI2_0_0.scala
index e13429c19..b34a23e74 100644
--- a/obp-api/src/main/scala/code/api/v2_0_0/OBPAPI2_0_0.scala
+++ b/obp-api/src/main/scala/code/api/v2_0_0/OBPAPI2_0_0.scala
@@ -28,12 +28,12 @@ package code.api.v2_0_0
 
 import code.api.OBPRestHelper
 import code.api.util.APIUtil.{OBPEndpoint, ResourceDoc, getAllowedEndpoints}
-import code.api.util.ApiVersion
+import code.api.util.{ApiVersion, VersionedOBPApis}
 import code.api.v1_3_0.APIMethods130
 import code.api.v1_4_0.APIMethods140
 import code.util.Helper.MdcLoggable
 
-object OBPAPI2_0_0 extends OBPRestHelper with APIMethods130 with APIMethods140 with APIMethods200 with MdcLoggable {
+object OBPAPI2_0_0 extends OBPRestHelper with APIMethods130 with APIMethods140 with APIMethods200 with MdcLoggable with VersionedOBPApis{
 
 
   val version : ApiVersion = ApiVersion.v2_0_0 // "2.0.0"
diff --git a/obp-api/src/main/scala/code/api/v2_1_0/OBPAPI2_1_0.scala b/obp-api/src/main/scala/code/api/v2_1_0/OBPAPI2_1_0.scala
index fe9aedae1..c70a76562 100644
--- a/obp-api/src/main/scala/code/api/v2_1_0/OBPAPI2_1_0.scala
+++ b/obp-api/src/main/scala/code/api/v2_1_0/OBPAPI2_1_0.scala
@@ -28,7 +28,7 @@ package code.api.v2_1_0
 
 import code.api.OBPRestHelper
 import code.api.util.APIUtil.{OBPEndpoint, ResourceDoc, getAllowedEndpoints}
-import code.api.util.{APIUtil, ApiVersion}
+import code.api.util.{APIUtil, ApiVersion, VersionedOBPApis}
 import code.api.v1_3_0.APIMethods130
 import code.api.v1_4_0.APIMethods140
 import code.api.v2_0_0.APIMethods200
@@ -36,7 +36,7 @@ import code.util.Helper.MdcLoggable
 
 import scala.collection.immutable.Nil
 
-object OBPAPI2_1_0 extends OBPRestHelper with APIMethods130 with APIMethods140 with APIMethods200 with APIMethods210 with MdcLoggable {
+object OBPAPI2_1_0 extends OBPRestHelper with APIMethods130 with APIMethods140 with APIMethods200 with APIMethods210 with MdcLoggable with VersionedOBPApis{
 
 
 
diff --git a/obp-api/src/main/scala/code/api/v2_2_0/OBPAPI2_2_0.scala b/obp-api/src/main/scala/code/api/v2_2_0/OBPAPI2_2_0.scala
index 4c933d04d..261f4fa1e 100644
--- a/obp-api/src/main/scala/code/api/v2_2_0/OBPAPI2_2_0.scala
+++ b/obp-api/src/main/scala/code/api/v2_2_0/OBPAPI2_2_0.scala
@@ -3,7 +3,7 @@ package code.api.v2_2_0
 
 import code.api.OBPRestHelper
 import code.api.util.APIUtil.{OBPEndpoint, ResourceDoc, getAllowedEndpoints}
-import code.api.util.{APIUtil, ApiVersion}
+import code.api.util.{APIUtil, ApiVersion, VersionedOBPApis}
 import code.api.v1_3_0.APIMethods130
 import code.api.v1_4_0.APIMethods140
 import code.api.v2_0_0.APIMethods200
@@ -12,7 +12,7 @@ import code.util.Helper.MdcLoggable
 
 import scala.collection.immutable.Nil
 
-object OBPAPI2_2_0 extends OBPRestHelper with APIMethods130 with APIMethods140 with APIMethods200 with APIMethods210 with APIMethods220 with MdcLoggable {
+object OBPAPI2_2_0 extends OBPRestHelper with APIMethods130 with APIMethods140 with APIMethods200 with APIMethods210 with APIMethods220 with MdcLoggable with VersionedOBPApis{
 
   val version : ApiVersion = ApiVersion.v2_2_0 //  "2.2.0"
   val versionStatus = "STABLE"
diff --git a/obp-api/src/main/scala/code/api/v3_0_0/OBPAPI3_0_0.scala b/obp-api/src/main/scala/code/api/v3_0_0/OBPAPI3_0_0.scala
index 7e6c2dd04..d5f487b6c 100644
--- a/obp-api/src/main/scala/code/api/v3_0_0/OBPAPI3_0_0.scala
+++ b/obp-api/src/main/scala/code/api/v3_0_0/OBPAPI3_0_0.scala
@@ -28,7 +28,7 @@ package code.api.v3_0_0
 
 import code.api.OBPRestHelper
 import code.api.util.APIUtil.{OBPEndpoint, ResourceDoc, getAllowedEndpoints}
-import code.api.util.ApiVersion
+import code.api.util.{ApiVersion, VersionedOBPApis}
 import code.api.v1_3_0.APIMethods130
 import code.api.v1_4_0.APIMethods140
 import code.api.v2_0_0.APIMethods200
@@ -46,7 +46,7 @@ This file defines which endpoints from all the versions are available in v3.0.0
  */
 
 
-object OBPAPI3_0_0 extends OBPRestHelper with APIMethods130 with APIMethods140 with APIMethods200 with APIMethods210 with APIMethods220 with APIMethods300 with CustomAPIMethods300 with MdcLoggable {
+object OBPAPI3_0_0 extends OBPRestHelper with APIMethods130 with APIMethods140 with APIMethods200 with APIMethods210 with APIMethods220 with APIMethods300 with CustomAPIMethods300 with MdcLoggable with VersionedOBPApis{
   
 
 
diff --git a/obp-api/src/main/scala/code/api/v3_1_0/OBPAPI3_1_0.scala b/obp-api/src/main/scala/code/api/v3_1_0/OBPAPI3_1_0.scala
index e6be767d9..c8c2ea7ab 100644
--- a/obp-api/src/main/scala/code/api/v3_1_0/OBPAPI3_1_0.scala
+++ b/obp-api/src/main/scala/code/api/v3_1_0/OBPAPI3_1_0.scala
@@ -28,7 +28,7 @@ package code.api.v3_1_0
 
 import code.api.OBPRestHelper
 import code.api.util.APIUtil.{OBPEndpoint, ResourceDoc, getAllowedEndpoints}
-import code.api.util.ApiVersion
+import code.api.util.{ApiVersion, VersionedOBPApis}
 import code.api.v1_3_0.APIMethods130
 import code.api.v1_4_0.APIMethods140
 import code.api.v2_0_0.APIMethods200
@@ -47,7 +47,7 @@ This file defines which endpoints from all the versions are available in v3.0.0
  */
 
 
-object OBPAPI3_1_0 extends OBPRestHelper with APIMethods130 with APIMethods140 with APIMethods200 with APIMethods210 with APIMethods220 with APIMethods300 with CustomAPIMethods300 with APIMethods310 with MdcLoggable {
+object OBPAPI3_1_0 extends OBPRestHelper with APIMethods130 with APIMethods140 with APIMethods200 with APIMethods210 with APIMethods220 with APIMethods300 with CustomAPIMethods300 with APIMethods310 with MdcLoggable with VersionedOBPApis{
 
   val version : ApiVersion = ApiVersion.v3_1_0
 
diff --git a/obp-api/src/main/scala/code/api/v4_0_0/OBPAPI4_0_0.scala b/obp-api/src/main/scala/code/api/v4_0_0/OBPAPI4_0_0.scala
index 430a17028..2c3278e3e 100644
--- a/obp-api/src/main/scala/code/api/v4_0_0/OBPAPI4_0_0.scala
+++ b/obp-api/src/main/scala/code/api/v4_0_0/OBPAPI4_0_0.scala
@@ -28,8 +28,8 @@ package code.api.v4_0_0
 
 import code.api.OBPRestHelper
 import code.api.util.APIUtil.{OBPEndpoint, ResourceDoc, getAllowedEndpoints}
-import code.api.util.ApiVersion
-import code.api.v1_3_0.APIMethods130
+import code.api.util.{ApiVersion, VersionedOBPApis}
+import code.api.v1_3_0.{APIMethods130}
 import code.api.v1_4_0.APIMethods140
 import code.api.v2_0_0.APIMethods200
 import code.api.v2_1_0.APIMethods210
@@ -48,7 +48,7 @@ This file defines which endpoints from all the versions are available in v4.0.0
  */
 
 
-object OBPAPI4_0_0 extends OBPRestHelper with APIMethods130 with APIMethods140 with APIMethods200 with APIMethods210 with APIMethods220 with APIMethods300 with CustomAPIMethods300 with APIMethods310 with APIMethods400 with MdcLoggable {
+object OBPAPI4_0_0 extends OBPRestHelper with APIMethods130 with APIMethods140 with APIMethods200 with APIMethods210 with APIMethods220 with APIMethods300 with CustomAPIMethods300 with APIMethods310 with APIMethods400 with MdcLoggable with VersionedOBPApis{
 
   val version : ApiVersion = ApiVersion.v4_0_0
 
diff --git a/obp-api/src/main/scala/code/util/ClassScanUtils.scala b/obp-api/src/main/scala/code/util/ClassScanUtils.scala
index 57f0bcc39..c7cc44284 100644
--- a/obp-api/src/main/scala/code/util/ClassScanUtils.scala
+++ b/obp-api/src/main/scala/code/util/ClassScanUtils.scala
@@ -5,6 +5,7 @@ import java.io.File
 import com.openbankproject.commons.model.Bank
 import org.apache.commons.lang3.StringUtils
 import org.clapper.classutil.{ClassFinder, ClassInfo}
+import com.openbankproject.commons.util.ReflectUtils
 
 import scala.reflect.runtime.universe.TypeTag
 
@@ -29,11 +30,11 @@ object ClassScanUtils {
 
   /**
     * scan classpath to get all companion objects or singleton objects those implements given trait
-    * @param clazz a trait type for filter object
     * @tparam T the trait type parameter
     * @return all companion objects or singleton object those implements given clazz
     */
-  def getSubTypeObjects[T:TypeTag](clazz: Class[T]) = {
+  def getSubTypeObjects[T:TypeTag]: List[T] = {
+    val clazz = ReflectUtils.typeTagToClass[T]
     finder.getClasses().filter(_.implements(clazz.getName)).map(_.name).map(companion[T](_)).toList
   }
 
diff --git a/obp-api/src/test/resources/frozen_type_meta_data b/obp-api/src/test/resources/frozen_type_meta_data
new file mode 100644
index 000000000..ad3f22a56
Binary files /dev/null and b/obp-api/src/test/resources/frozen_type_meta_data differ
diff --git a/obp-api/src/test/scala/RunWebApp.scala b/obp-api/src/test/scala/RunWebApp.scala
index a02470c71..ef1248db3 100644
--- a/obp-api/src/test/scala/RunWebApp.scala
+++ b/obp-api/src/test/scala/RunWebApp.scala
@@ -26,7 +26,6 @@ TESOBE (http://www.tesobe.com/)
   */
 
 import code.api.util.APIUtil
-import net.liftweb.util.Props
 import org.eclipse.jetty.server.Server
 import org.eclipse.jetty.webapp.WebAppContext
 
diff --git a/obp-api/src/test/scala/code/util/FrozenClassTest.scala b/obp-api/src/test/scala/code/util/FrozenClassTest.scala
new file mode 100644
index 000000000..8161fa690
--- /dev/null
+++ b/obp-api/src/test/scala/code/util/FrozenClassTest.scala
@@ -0,0 +1,81 @@
+package code.util
+
+import code.api.util.ApiVersion
+import code.setup.ServerSetup
+import org.scalatest.Tag
+
+class FrozenClassTest extends ServerSetup {
+
+  object FrozenClassTag extends Tag("Frozen_Classes")
+
+  val (persistedVersionToEndpointNames, persistedTypeNameToTypeValFields) = FrozenClassUtil.readPersistedFrozenApiInfo
+  val (versionToEndpointNames, typeNameToTypeValFields) = FrozenClassUtil.getFrozenApiInfo
+
+  feature("Frozen version apis not changed") {
+
+    scenario(s"count of STABLE OBPAPIxxxx should not be reduce, if pretty sure need modify it, please run ${FrozenClassUtil.sourceName}", FrozenClassTag) {
+
+      val persistedStableVersions = persistedVersionToEndpointNames.map(_._1).toSet
+      val currentStableVersions = versionToEndpointNames.map(_._1).toSet
+
+      val increasedVersions = persistedStableVersions.diff(currentStableVersions)
+      increasedVersions should equal(Set.empty[ApiVersion])
+    }
+
+    scenario(s"count of STABLE OBPAPIxxxx should not be increased, if pretty sure need modify it, please run ${FrozenClassUtil.sourceName}", FrozenClassTag) {
+      val persistedStableVersions = persistedVersionToEndpointNames.map(_._1).toSet
+      val currentStableVersions = versionToEndpointNames.map(_._1).toSet
+
+      val reducedVersions = currentStableVersions.diff(persistedStableVersions)
+      reducedVersions should equal(Set.empty[ApiVersion])
+    }
+
+    scenario(s"api count of STABLE value of OBPAPIxxxx#versionStatus should not be reduce, if pretty sure need modify it, please run ${FrozenClassUtil.sourceName}", FrozenClassTag) {
+      val reducedApis = for {
+        (pVersion, pEndpointNames) <- persistedVersionToEndpointNames
+        (version, endpointNames) <- versionToEndpointNames
+        if (pVersion == version)
+        reducedApisOfVersion = pEndpointNames.diff(endpointNames).mkString(",")
+        if (reducedApisOfVersion.size > 0)
+      } yield {
+        s"$version reduced apis: $reducedApisOfVersion"
+      }
+      reducedApis should equal(Nil)
+    }
+
+    scenario(s"api count of STABLE value of OBPAPIxxxx#versionStatus should not be increased, if pretty sure need modify it, please run ${FrozenClassUtil.sourceName}", FrozenClassTag) {
+      val increasedApis = for {
+        (pVersion, pEndpointNames) <- persistedVersionToEndpointNames
+        (version, endpointNames) <- versionToEndpointNames
+        if (pVersion == version)
+        increasedApis = endpointNames.diff(pEndpointNames).mkString(",")
+        if (increasedApis.size > 0)
+      } yield {
+        s"$version increased apis: $increasedApis"
+      }
+      increasedApis should equal(Nil)
+    }
+  }
+
+  feature("Frozen type structure not be modified") {
+    scenario(s"frozen class structure should not be modified, if pretty sure need modify it, please run ${FrozenClassUtil.sourceName}", FrozenClassTag) {
+          val changedTypes =  for {
+            (pTypeName, pFields)  <- persistedTypeNameToTypeValFields.toList
+            (typeName, fields) <- typeNameToTypeValFields.toList
+            if(pTypeName == typeName && pFields != fields)
+          } yield {
+            val expectStructure = pFields.map(pair => s"${pair._1}:${pair._2}").mkString("(", ", ", ")")
+            val actualStructure = fields.map(pair => s"${pair._1}:${pair._2}").mkString("(", ", ", ")")
+
+            s"""
+               |{
+               | typeName: $typeName
+               | expectStructure: $expectStructure
+               | actualStructure: $actualStructure
+               |}
+               |""".stripMargin
+          }
+        changedTypes should equal (Nil)
+    }
+  }
+}
diff --git a/obp-api/src/test/scala/code/util/FrozenClassUtil.scala b/obp-api/src/test/scala/code/util/FrozenClassUtil.scala
new file mode 100644
index 000000000..077df525b
--- /dev/null
+++ b/obp-api/src/test/scala/code/util/FrozenClassUtil.scala
@@ -0,0 +1,96 @@
+package code.util
+
+import java.io._
+import java.net.URI
+
+import code.TestServer
+import code.api.util.{ApiVersion, VersionedOBPApis}
+import com.openbankproject.commons.util.ReflectUtils
+import org.apache.commons.io.IOUtils
+
+import scala.reflect.runtime.universe._
+
+/**
+  * this util is for persist metadata of frozen type, those frozen type is versionStatus = "STABLE" related example classes,
+  * after persist the metadata, the FrozenClassTest can check whether there some modify change any frozen type, the test will fail when there are some changes in the frozen type
+  */
+object FrozenClassUtil {
+
+  val sourceName = s"""${this.getClass.getName.replace("$", "")}.scala"""
+  // current project absolute path
+  val basePath = this.getClass.getResource("/").toString .replaceFirst("target[/\\\\].*$", "")
+  val persistFilePath = new URI(s"${basePath}/src/test/resources/frozen_type_meta_data").getPath
+
+  def main(args: Array[String]): Unit = {
+    System.setProperty("run.mode", "test") // make sure this Props.mode is the same as unit test Props.mode
+    val server = TestServer
+    val out = new ObjectOutputStream(new FileOutputStream(persistFilePath))
+    try {
+      out.writeObject(getFrozenApiInfo)
+    } finally {
+      IOUtils.closeQuietly(out)
+      // there is no graceful way to shutdown jetty server, so here use brutal way to shutdown it.
+      server.server.stop()
+      System.exit(0)
+    }
+  }
+
+  /**
+    * get frozen api information by scan classes
+    * @return frozen api information, include api names of given api version and frozen class metadata
+    */
+  def getFrozenApiInfo: (List[(ApiVersion, Set[String])], Map[String, Map[String, String]]) = {
+    val versionedOBPApisList: List[VersionedOBPApis] = ClassScanUtils.getSubTypeObjects[VersionedOBPApis]
+      .filter(_.versionStatus == "STABLE")
+
+    val versionToEndpointNames: List[(ApiVersion, Set[String])] = versionedOBPApisList
+      .map(it => {
+        val version = it.version
+        val currentVersionApis = it.allResourceDocs.filter(version == _.implementedInApiVersion).toSet
+        (version, currentVersionApis.map(_.partialFunctionName))
+      })
+
+    val allFreezingTypes: Set[Type] = versionedOBPApisList
+      .flatMap(_.allResourceDocs)
+      .flatMap(it => it.exampleRequestBody :: it.successResponseBody :: Nil)
+      .filter(ReflectUtils.isObpObject(_))
+      .map(ReflectUtils.getType(_))
+      .toSet
+      .flatMap(getNestedOBPType(_))
+
+    val typeNameToTypeValFields: Map[String, Map[String, String]] = allFreezingTypes
+      .map(it => {
+        val valNameToTypeName = ReflectUtils.getConstructorParamInfo(it).map(pair => (pair._1, pair._2.toString))
+        (it.typeSymbol.asClass.fullName, valNameToTypeName)
+      })
+      .toMap
+    (versionToEndpointNames, typeNameToTypeValFields)
+  }
+
+  /**
+    * read persisted frozen api info from persist file
+    * @return persisted frozen api information, include api names of given api version and frozen class metadata
+    */
+  def readPersistedFrozenApiInfo: (List[(ApiVersion, Set[String])], Map[String, Map[String, String]]) = {
+    assume(new File(persistFilePath).exists(), s"freeze type not persisted yet, please run ${this.sourceName}")
+    val input = new ObjectInputStream(new FileInputStream(persistFilePath))
+    try {
+      input.readObject().asInstanceOf[(List[(ApiVersion, Set[String])], Map[String, Map[String, String]])]
+    } finally {
+      IOUtils.closeQuietly(input)
+    }
+  }
+
+  private def getNestedOBPType(tp: Type): Set[Type] = {
+    ReflectUtils.getConstructorParamInfo(tp)
+      .values
+      .map(it => ReflectUtils.getDeepGenericType(it).head)
+      .toSet
+      .filter(ReflectUtils.isObpType)
+      .filterNot(tp ==)  // avoid infinite recursive
+    match {
+      case set if(set.size > 0) => set.flatMap(getNestedOBPType) + tp
+      case _ =>  Set(tp)
+    }
+  }
+}
diff --git a/obp-commons/src/main/scala/com/openbankproject/commons/util/ReflectUtils.scala b/obp-commons/src/main/scala/com/openbankproject/commons/util/ReflectUtils.scala
index 023c6cb60..0b6454dc1 100644
--- a/obp-commons/src/main/scala/com/openbankproject/commons/util/ReflectUtils.scala
+++ b/obp-commons/src/main/scala/com/openbankproject/commons/util/ReflectUtils.scala
@@ -15,7 +15,7 @@ object ReflectUtils {
 
   def isObpObject(any: Any): Boolean = any != null && OBP_TYPE_REGEX.findFirstIn(any.getClass.getName).isDefined
 
-  def isObpType(tp: Type): Boolean = tp != null && OBP_TYPE_REGEX.findFirstIn(tp.typeSymbol.fullName).isDefined
+  def isObpType(tp: Type): Boolean = tp != null && tp.typeSymbol.isClass && OBP_TYPE_REGEX.findFirstIn(tp.typeSymbol.fullName).isDefined
 
   /**
     * get all val and var name to values of given object
@@ -278,6 +278,11 @@ object ReflectUtils {
     })
   }
 
+  def typeTagToClass[T: TypeTag]: Class[_] = {
+    val tt = implicitly[TypeTag[T]]
+    tt.mirror.runtimeClass(tt.tpe.typeSymbol.asClass)
+  }
+
   def classToSymbol(clazz: Class[_]): ru.ClassSymbol = ru.runtimeMirror(clazz.getClassLoader).classSymbol(clazz)
 
   /**
@@ -285,10 +290,16 @@ object ReflectUtils {
     * @param tp to do extract type
     * @return a map of constructor parameter name to type, if tp is abstract, return empty amp
     */
-  def getConstructorParamInfo(tp: ru.Type): Map[String, ru.Type] = tp.typeSymbol.isClass match {
+  def getConstructorParamInfo(tp: ru.Type): Map[String, ru.Type] =
+    tp.typeSymbol.isClass && !tp.typeSymbol.asClass.isTrait match {
     case false => Map.empty[String, ru.Type]
     case true => {
-      ReflectUtils.getPrimaryConstructor(tp).paramLists.headOption.getOrElse(Nil).map(it => (it.name.toString, it.info)).toMap
+      ReflectUtils.getPrimaryConstructor(tp)
+        .paramLists
+        .headOption
+        .getOrElse(Nil)
+        .map(it => (it.name.toString, it.info))
+        .toMap
     }
   }
   /**