diff --git a/model/ap_application.csv b/model/ap_application.csv
deleted file mode 100644
index ed907a9..0000000
--- a/model/ap_application.csv
+++ /dev/null
@@ -1,6 +0,0 @@
-_type;ctlg;;;;;;;;;
-_key;_field;;;;;;;;;
-table:ap_application;_field;type;format;index;generic;aggregat;key;acceptance;alias;description
-;apappid;pk;vchar(256);N;;;;;;
-;apid;int;vchar(256);I;;;;;;
-;appid;int;vchar(256);I;;;;;;
diff --git a/model/ap_applications.csv b/model/ap_applications.csv
new file mode 100644
index 0000000..ce2c9db
--- /dev/null
+++ b/model/ap_applications.csv
@@ -0,0 +1,6 @@
+_type;ddl;;;;;;;;;
+_key;_field;;;;;;;;;
+table:ap_applications;_field;type;format;index;generic;aggregat;key;acceptance;alias;description
+;apappid;pk;vchar(256);N;;;;;;
+;apid;int;vchar(256);I;;;;;;
+;appid;int;vchar(256);I;;;;;;
diff --git a/model/ap_component.csv b/model/ap_components.csv
similarity index 51%
rename from model/ap_component.csv
rename to model/ap_components.csv
index 84fdf69..9f97a4c 100644
--- a/model/ap_component.csv
+++ b/model/ap_components.csv
@@ -1,6 +1,6 @@
-_type;ctlg;;;;;;;;;
+_type;ddl;;;;;;;;;
 _key;_field;;;;;;;;;
-table:ap_component;_field;type;format;index;generic;aggregat;key;acceptance;alias;description
+table:ap_components;_field;type;format;index;generic;aggregat;key;acceptance;alias;description
 ;apcomid;pk;int;N;;;;;;
 ;apid;int;int;I;;;;;;
 ;coid;int;int;I;;;;;;
diff --git a/model/ap_project.csv b/model/ap_projects.csv
similarity index 60%
rename from model/ap_project.csv
rename to model/ap_projects.csv
index f6ff5e4..cebb75e 100644
--- a/model/ap_project.csv
+++ b/model/ap_projects.csv
@@ -1,6 +1,6 @@
-_type;ctlg;;;;;;;;;
+_type;ddl;;;;;;;;;
 _key;_field;;;;;;;;;
-table:ap_project;_field;type;format;index;generic;aggregat;key;acceptance;alias;description
+table:ap_projects;_field;type;format;index;generic;aggregat;key;acceptance;alias;description
 ;pjid;pk;int;N;;;;;;
 ;apid;int;int;I;;;;;;
 ;project;str;vchar(256);I;;;;;;
diff --git a/model/ap_usecases.csv b/model/ap_usecases.csv
new file mode 100644
index 0000000..64e3704
--- /dev/null
+++ b/model/ap_usecases.csv
@@ -0,0 +1,7 @@
+_type;ddl;;;;;;;;;
+_key;_field;;;;;;;;;
+table:ap_usecases;_field;type;format;index;generic;aggregat;key;acceptance;alias;description
+;apuseid;pk;int;N;;;;;;
+;apid;int;int;I;;;;;;
+;usid;int;int;I;;;;;;
+;usecase;str;vchar(256);N;;;;;;
diff --git a/model/ap_variants.csv b/model/ap_variants.csv
new file mode 100644
index 0000000..81656ce
--- /dev/null
+++ b/model/ap_variants.csv
@@ -0,0 +1,7 @@
+_type;ddl;;;;;;;;;
+_key;_field;;;;;;;;;
+table:ap_variants;_field;type;format;index;generic;aggregat;key;acceptance;alias;description
+;apvarid;pk;int;N;;;;;;
+;apid;int;int;I;;;;;;
+;vaid;int;int;I;;;;;;
+;variannt;str;vchar(256);N;;;;;;
diff --git a/model/application.py b/model/application.py
index 1de0ceb..838f518 100644
--- a/model/application.py
+++ b/model/application.py
@@ -24,23 +24,9 @@ DEFAULT_SYNC = M.SYNC_FULL_GIT2DB
 TABLE_NAME = B.SUBJECT_APP
 """ system-name for this entity """
 FIELD_ID = "apid"
-FIELD_NAME = D.FIELD_NAME
-FIELD_DESCRIPTION = B.SUBJECT_DESCRIPTION
-FIELD_REFERENCE = B.SUBJECT_REFERENCE
-FIELD_PROJECT = B.SUBJECT_PROJECT
-LIST_FIELDS = [FIELD_ID, FIELD_NAME, FIELD_DESCRIPTION, FIELD_REFERENCE, FIELD_PROJECT]
-""" list of object-attributes """
-LIST_NODES = [B.NODE_ATTRIBUTES]
-
-SUB_COMPS = B.SUBJECT_COMPS
-SUB_APPS = B.SUBJECT_APPS
-SUB_RELS = B.SUBJECT_RELS
-SUB_USECASE = B.SUBJECT_USECASES
-LIST_SUBTABLES = [SUB_APPS, SUB_COMPS, SUB_RELS, SUB_USECASE]
-PREFIX_SUBTABLE = "ap"
 
 FILE_EXTENSION = D.DFILE_TYPE_YML
-UNIQUE_FIELDS = [FIELD_NAME]
+UNIQUE_FIELDS = [D.FIELD_NAME]
 """ unique business field as human identifer """
 IDENTIFYER_FIELDS = [FIELD_ID]
 """ unique technical field as technical identifer """
@@ -201,7 +187,7 @@ class Application(model.entity.Entity):
     LIST_FIELDS = [FIELD_ID, D.FIELD_NAME, B.SUBJECT_DESCRIPTION, B.SUBJECT_REFERENCE, B.SUBJECT_PROJECT]
     """ list of object-attributes """
     LIST_NODES = [B.NODE_ATTRIBUTES]
-    LIST_SUBTABLES = [B.SUBJECT_APPS, B.SUBJECT_COMPS, B.SUBJECT_RELS, B.SUBJECT_USECASES]
+    LIST_SUBTABLES = [B.SUBJECT_APPS, B.SUBJECT_COMPS, B.SUBJECT_USECASES, B.SUBJECT_VARIANTS]
     PREFIX_SUBTABLE = "ap"
 
     def read_unique_names(self, job, project, application, gran, args):
diff --git a/model/artifact.py b/model/artifact.py
new file mode 100644
index 0000000..731ec61
--- /dev/null
+++ b/model/artifact.py
@@ -0,0 +1,46 @@
+#!/usr/bin/python
+# -*- coding: utf-8 -*-
+# ---------------------------------------------------------------------------------------------------------
+# Author : Ulrich Carmesin
+# Source : gitea.ucarmesin.de
+# ---------------------------------------------------------------------------------------------------------
+import basic.toolHandling
+import tools.data_const as D
+import basic.constants as B
+import model.entity
+import tools.config_tool
+
+FIELD_ID = "arid"
+LIST_FIELDS = [FIELD_ID, D.FIELD_NAME, B.SUBJECT_DESCRIPTION, B.SUBJECT_REFERENCE,
+               B.SUBJECT_PROJECT, B.SUBJECT_COMP, B.SUBJECT_TESTCASE]
+""" list of object-attributes """
+LIST_NODES = [B.NODE_ATTRIBUTES]
+
+LIST_SUBTABLES = []
+
+
+class Artifact(model.entity.Entity):
+    FIELD_ID = "arid"
+    LIST_FIELDS = [FIELD_ID, D.FIELD_NAME, B.SUBJECT_DESCRIPTION, B.SUBJECT_REFERENCE,
+                   B.SUBJECT_PROJECT, B.SUBJECT_COMP, B.SUBJECT_TESTCASE]
+    """ list of object-attributes """
+    LIST_NODES = [B.NODE_ATTRIBUTES]
+
+    LIST_SUBTABLES = []
+    name = ""
+    description = ""
+    release = ""
+    testsuites = {}
+    steps = []
+
+
+    def read_entity(self, job, name):
+        """
+        reads the entity from the file-system
+        :param job:
+        :param name:
+        :return:
+        """
+        config = {}
+        return self.setAttributes(job, config, name, self.LIST_FIELDS, self.LIST_NODES, self.LIST_SUBTABLES)
+
diff --git a/model/co_artifact.csv b/model/co_artifacts.csv
similarity index 67%
rename from model/co_artifact.csv
rename to model/co_artifacts.csv
index e425fdd..a0eeed7 100644
--- a/model/co_artifact.csv
+++ b/model/co_artifacts.csv
@@ -1,6 +1,6 @@
-_type;ctlg;;;;;;;;;
+_type;ddl;;;;;;;;;
 _key;_field;;;;;;;;;
-table:co_artifact;_field;type;format;index;generic;aggregat;key;acceptance;alias;description
+table:co_artifacts;_field;type;format;index;generic;aggregat;key;acceptance;alias;description
 ;coartid;pk;int;N;;;;;;
 ;coid;int;integer;I;;;T:1;;;
 ;stid;int;integer;I;;;T:2;;;
diff --git a/model/co_steps.csv b/model/co_steps.csv
new file mode 100644
index 0000000..dbdb5b0
--- /dev/null
+++ b/model/co_steps.csv
@@ -0,0 +1,11 @@
+_type;ddl;;;;;;;;;
+_key;_field;;;;;;;;;
+table:co_steps;_field;type;format;index;generic;aggregat;key;acceptance;alias;description
+;costpid;pk;int;N;;;;;;
+;coid;int;integer;I;;;T:1;;;
+;vaid;int;integer;I;;;T:2;;;
+;stid;int;integer;I;;;T:2;;;
+;step;str;vchar(256);I;;;;;;
+;variant;str;vchar(256);I;;;;;;
+;description;string;vchar(256);N;;;;;;
+
diff --git a/model/co_table.csv b/model/co_tables.csv
similarity index 68%
rename from model/co_table.csv
rename to model/co_tables.csv
index c6db209..af3d7f7 100644
--- a/model/co_table.csv
+++ b/model/co_tables.csv
@@ -1,6 +1,6 @@
-_type;ctlg;;;;;;;;;
+_type;ddl;;;;;;;;;
 _key;_field;;;;;;;;;
-table:co_table;_field;type;format;index;generic;aggregat;key;acceptance;alias;description
+table:co_tables;_field;type;format;index;generic;aggregat;key;acceptance;alias;description
 ;codtbid;pk;int;N;;;;;;
 ;coid;int;integer;I;;;T:1;;;
 ;dtid;int;integer;I;;;T:2;;;
diff --git a/model/en_component.csv b/model/en_components.csv
similarity index 77%
rename from model/en_component.csv
rename to model/en_components.csv
index 45e04a3..ad606f0 100644
--- a/model/en_component.csv
+++ b/model/en_components.csv
@@ -1,6 +1,6 @@
-_type;ctlg;;;;;;;;;
+_type;ddl;;;;;;;;;
 _key;_field;;;;;;;;;
-table:en_component;_field;type;format;index;generic;aggregat;key;acceptance;alias;description
+table:en_components;_field;type;format;index;generic;aggregat;key;acceptance;alias;description
 ;encomid;pk;int;N;;;;;;
 ;enid;int;vchar(256);I;;;;;;
 ;component;str;vchar(256);I;;;;;;
diff --git a/model/en_project.csv b/model/en_project.csv
deleted file mode 100644
index 8ddd26d..0000000
--- a/model/en_project.csv
+++ /dev/null
@@ -1,6 +0,0 @@
-_type;ctlg;;;;;;;;;
-_key;_field;;;;;;;;;
-table:en_project;_field;type;format;index;generic;aggregat;key;acceptance;alias;description
-;enproid;pk;int;N;;;;;;
-;enid;int;vchar(256);I;;;;;;
-;project;str;vchar(256);I;;;;;;
diff --git a/model/en_projects.csv b/model/en_projects.csv
new file mode 100644
index 0000000..b45c19f
--- /dev/null
+++ b/model/en_projects.csv
@@ -0,0 +1,6 @@
+_type;ddl;;;;;;;;;
+_key;_field;;;;;;;;;
+table:en_projects;_field;type;format;index;generic;aggregat;key;acceptance;alias;description
+;enproid;pk;int;N;;;;;;
+;enid;int;vchar(256);I;;;;;;
+;project;str;vchar(256);I;;;;;;
diff --git a/model/factory.py b/model/factory.py
index 9df0247..5582906 100644
--- a/model/factory.py
+++ b/model/factory.py
@@ -7,7 +7,7 @@ def get_entity_object(job, name, args):
 
     if name in [B.SUBJECT_STEPS, B.SUBJECT_STEP]:
         entity = getStep(job)
-    elif name in [B.SUBJECT_STORIES, B.SUBJECT_STORY]:
+    elif name in [B.SUBJECT_STORIES, B.SUBJECT_STORY, "storys"]:
         entity = getStory(job)
     elif name in [B.SUBJECT_VARIANTS, B.SUBJECT_VARIANT]:
         entity = getVariant(job)
@@ -21,24 +21,38 @@ def get_entity_object(job, name, args):
         entity = getApplication(job)
     elif name in [B.SUBJECT_COMPS, B.SUBJECT_COMP]:
         entity = getComponent(job)
+    elif name in [B.SUBJECT_ARTIFACTS, B.SUBJECT_ARTIFACT]:
+        entity = getEnvironment(job)
     elif name in [B.SUBJECT_TESTCASES, B.SUBJECT_TESTCASE]:
         entity = getTestcase(job)
-    elif name in [B.SUBJECT_TESTSUITES]:
+    elif name in [B.SUBJECT_TESTSUITES, B.SUBJECT_TESTSUITE]:
         entity = getTestsuite(job)
     elif name in [B.SUBJECT_TESTPLANS, B.SUBJECT_TESTPLAN]:
         entity = getTestplan(job)
     elif name in [B.SUBJECT_USERS, B.SUBJECT_USER]:
         entity = getUser(job)
+    elif name in [B.SUBJECT_REL, B.SUBJECT_RELS]:
+        entity = getRelease(job)
+    elif name in [B.SUBJECT_ENVIRONMENT, B.SUBJECT_ENVIRONMENTS]:
+        entity = getEnvironment(job)
     else:
         return None
     entity.setAttributes(job, args, name, entity.getFieldList(), entity.getNodeList(), entity.getSubtableList())
     #testserver = basic.Testserver.getInstance(job)
     return entity
 
-def getEnvironment(job=None):
+def getRelease(job=None, name=""):
+    import model.release
+    return model.release.Release(job)
+
+def getEnvironment(job=None, name=""):
     import model.environment
     return model.environment.Environment(job)
 
+def getArtifact(job=None, name=""):
+    import model.artifact
+    return model.artifact.Artifact(job)
+
 def getApplication(job=None, args={}, name=""):
     import model.application
     return model.application.Application(job)
diff --git a/model/release.py b/model/release.py
index 2617f05..29b35d0 100644
--- a/model/release.py
+++ b/model/release.py
@@ -27,7 +27,8 @@ class Release(model.entity.Entity):
                    B.NODE_ATTRIBUTES]
     """ list of object-attributes """
     LIST_NODES = [B.NODE_ATTRIBUTES]
-    LIST_SUBTABLES = []
+    LIST_SUBTABLES = [B.SUBJECT_APPS, B.SUBJECT_STORIES]
+    PREFIX_SUBTABLE = "rl"
 
     rlid = 0
     name = ""
diff --git a/model/rl_applications.csv b/model/rl_applications.csv
new file mode 100644
index 0000000..f2e00fd
--- /dev/null
+++ b/model/rl_applications.csv
@@ -0,0 +1,6 @@
+_type;ddl;;;;;;;;;
+_key;_field;;;;;;;;;
+table:rl_applications;_field;type;format;index;generic;aggregat;key;acceptance;alias;description
+;rlappid;pk;vchar(256);N;;;;;;
+;rlid;int;vchar(256);I;;;;;;
+;appid;int;vchar(256);I;;;;;;
diff --git a/model/co_step.csv b/model/rl_stories.csv
similarity index 52%
rename from model/co_step.csv
rename to model/rl_stories.csv
index 003db12..d05433c 100644
--- a/model/co_step.csv
+++ b/model/rl_stories.csv
@@ -1,8 +1,8 @@
-_type;ctlg;;;;;;;;;
+_type;ddl;;;;;;;;;
 _key;_field;;;;;;;;;
-table:co_step;_field;type;format;index;generic;aggregat;key;acceptance;alias;description
-;costpid;pk;int;N;;;;;;
-;coid;int;integer;I;;;T:1;;;
+table:rl_stories;_field;type;format;index;generic;aggregat;key;acceptance;alias;description
+;rlstrid;pk;integer;N;;;T:1;;;
+;rlid;int;integer;I;;;T:1;;;
 ;stid;int;integer;I;;;T:2;;;
 ;story;str;vchar(256);I;;;;;;
 ;description;string;vchar(256);N;;;;;;
diff --git a/model/st_releases.csv b/model/st_releases.csv
new file mode 100644
index 0000000..f7222b1
--- /dev/null
+++ b/model/st_releases.csv
@@ -0,0 +1,8 @@
+_type;ddl;;;;;;;;;
+_key;_field;;;;;;;;;
+table:st_releases;_field;type;format;index;generic;aggregat;key;acceptance;alias;description
+;strelid;pk;integer;N;;;;;;
+;stid;int;integer;I;;;T:1;;;
+;rlid;int;integer;I;;;T:2;;;
+;description;string;vchar(256);N;;;;;;
+;reference;str;vchar(256);N;;;;;;
diff --git a/model/story.py b/model/story.py
index 145b7aa..f849588 100644
--- a/model/story.py
+++ b/model/story.py
@@ -27,6 +27,7 @@ class Story(model.entity.Entity):
     """ list of object-attributes """
     LIST_NODES = []
     LIST_SUBTABLES = [B.SUBJECT_RELS]
+    PREFIX_SUBTABLE = "st"
 
     stid = 0
     story = ""
diff --git a/model/table.py b/model/table.py
index 3bcc93c..fb886c5 100644
--- a/model/table.py
+++ b/model/table.py
@@ -135,6 +135,7 @@ class Table(model.entity.Entity):
         :param context:
         :return:
         """
+        config = {}
         if "context" in args:
             if args["context"] == "component":
                 ddl = tools.config_tool.getConfig(job, D.DDL_FILENAME, self.component.name, name, ttype=D.CSV_SPECTYPE_DDL)
@@ -142,11 +143,10 @@ class Table(model.entity.Entity):
                 ddl = tools.config_tool.getConfig(job, D.DDL_FILENAME, args["context"], name, ttype=D.CSV_SPECTYPE_DDL)
             elif args["context"] == B.ATTR_INST_TESTSERVER:
                 ddl = tools.config_tool.getConfig(job, D.DDL_FILENAME, B.ATTR_INST_TESTSERVER, name, ttype=D.CSV_SPECTYPE_DDL)
-        config = {}
-        if "_name" in ddl:
-            config[ddl["_name"]] = ddl
-        else:
-            config = ddl
+            if "_name" in ddl:
+                config[ddl["_name"]] = ddl
+            else:
+                config = ddl
         return self.setAttributes(job, config, name, self.LIST_FIELDS, self.LIST_NODES, self.LIST_SUBTABLES)
 
     def select_entity(self, job, name):
diff --git a/model/tc_step.csv b/model/tc_steps.csv
similarity index 62%
rename from model/tc_step.csv
rename to model/tc_steps.csv
index 745fc68..d7a5ac0 100644
--- a/model/tc_step.csv
+++ b/model/tc_steps.csv
@@ -1,6 +1,6 @@
-_type;ctlg;;;;;;;;;
+_type;ddl;;;;;;;;;
 _key;_field;;;;;;;;;
-table:tc_step;_field;type;format;index;generic;aggregat;key;acceptance;alias;description
+table:tc_steps;_field;type;format;index;generic;aggregat;key;acceptance;alias;description
 ;tcstpid;pk;integer;N;;;;;;
 ;tcid;int;integer;I;;;T:1;;;
 ;spid;int;integer;I;;;T:2;;;
diff --git a/model/tc_story.csv b/model/tc_stories.csv
similarity index 68%
rename from model/tc_story.csv
rename to model/tc_stories.csv
index cd2aae8..110e166 100644
--- a/model/tc_story.csv
+++ b/model/tc_stories.csv
@@ -1,6 +1,6 @@
-_type;ctlg;;;;;;;;;
+_type;ddl;;;;;;;;;
 _key;_field;;;;;;;;;
-table:tc_story;_field;type;format;index;generic;aggregat;key;acceptance;alias;description
+table:tc_stories;_field;type;format;index;generic;aggregat;key;acceptance;alias;description
 ;tcstrid;pk;integer;N;;;T:1;;;
 ;tcid;int;integer;I;;;T:1;;;
 ;stid;int;integer;I;;;T:2;;;
diff --git a/model/tc_table.csv b/model/tc_tables.csv
similarity index 58%
rename from model/tc_table.csv
rename to model/tc_tables.csv
index 645fce5..eb79ff8 100644
--- a/model/tc_table.csv
+++ b/model/tc_tables.csv
@@ -1,6 +1,6 @@
-_type;ctlg;;;;;;;;;
+_type;ddl;;;;;;;;;
 _key;_field;;;;;;;;;
-table:tc_table;_field;type;format;index;generic;aggregat;key;acceptance;alias;description
+table:tc_tables;_field;type;format;index;generic;aggregat;key;acceptance;alias;description
 ;tcdtbid;pk;integer;N;;;;;;
 ;tcid;int;integer;I;;;T:1;;;
 ;dtid;int;integer;I;;;T:2;;;
diff --git a/model/tp_testsuite.csv b/model/tp_testsuites.csv
similarity index 61%
rename from model/tp_testsuite.csv
rename to model/tp_testsuites.csv
index 6ab80aa..10bc19a 100644
--- a/model/tp_testsuite.csv
+++ b/model/tp_testsuites.csv
@@ -1,6 +1,6 @@
-_type;ctlg;;;;;;;;;
+_type;ddl;;;;;;;;;
 _key;_field;;;;;;;;;
-table:tp_testsuite;_field;type;format;index;generic;aggregat;key;acceptance;alias;description
+table:tp_testsuites;_field;type;format;index;generic;aggregat;key;acceptance;alias;description
 ;tptsuid;pk;integer;N;;;;;;
 ;tpid;int;integer;I;;;T:1;;;
 ;tsid;int;integer;I;;;T:2;;;
diff --git a/model/tr_artifact.csv b/model/tr_artifacts.csv
similarity index 65%
rename from model/tr_artifact.csv
rename to model/tr_artifacts.csv
index b4776a1..9cacf14 100644
--- a/model/tr_artifact.csv
+++ b/model/tr_artifacts.csv
@@ -1,6 +1,6 @@
-_type;ctlg;;;;;;;;;
+_type;ddl;;;;;;;;;
 _key;_field;;;;;;;;;
-table:tr_artifact;_field;type;format;index;generic;aggregat;key;acceptance;alias;description
+table:tr_artifacts;_field;type;format;index;generic;aggregat;key;acceptance;alias;description
 ;trartid;pk;integer;N;;;;;;
 ;trid;int;integer;I;;;T:1;;;
 ;arid;int;integer;I;;;T:2;;;
diff --git a/model/ts_testcase.csv b/model/ts_testcases.csv
similarity index 61%
rename from model/ts_testcase.csv
rename to model/ts_testcases.csv
index 2d575a4..8217c9d 100644
--- a/model/ts_testcase.csv
+++ b/model/ts_testcases.csv
@@ -1,6 +1,6 @@
-_type;ctlg;;;;;;;;;
+_type;ddl;;;;;;;;;
 _key;_field;;;;;;;;;
-table:ts_testcase;_field;type;format;index;generic;aggregat;key;acceptance;alias;description
+table:ts_testcases;_field;type;format;index;generic;aggregat;key;acceptance;alias;description
 ;tstcsid;pk;integer;N;;;;;;
 ;tsid;int;integer;I;;;T:1;;;
 ;tcid;int;integer;I;;;T:2;;;
diff --git a/model/ts_usecase.csv b/model/ts_usecases.csv
similarity index 61%
rename from model/ts_usecase.csv
rename to model/ts_usecases.csv
index b5b65f4..a750dac 100644
--- a/model/ts_usecase.csv
+++ b/model/ts_usecases.csv
@@ -1,6 +1,6 @@
-_type;ctlg;;;;;;;;;
+_type;ddl;;;;;;;;;
 _key;_field;;;;;;;;;
-table:ts_usecase;_field;type;format;index;generic;aggregat;key;acceptance;alias;description
+table:ts_usecases;_field;type;format;index;generic;aggregat;key;acceptance;alias;description
 ;tsucsid;pk;integer;N;;;;;;
 ;tsid;int;integer;I;;;T:1;;;
 ;ucid;int;integer;I;;;T:2;;;
diff --git a/model/variant.py b/model/variant.py
index 8803e60..8d2eb42 100644
--- a/model/variant.py
+++ b/model/variant.py
@@ -26,10 +26,10 @@ IDENTIFYER_FIELDS = [FIELD_ID]
 
 class Variant(model.entity.Entity):
     FIELD_ID = "vrid"
-    LIST_FIELDS = [FIELD_ID, D.FIELD_NAME, B.SUBJECT_DESCRIPTION, B.SUBJECT_REFERENCE, B.SUBJECT_PROJECT]
+    LIST_FIELDS = [FIELD_ID, D.FIELD_NAME, B.SUBJECT_DESCRIPTION, B.SUBJECT_REFERENCE, B.SUBJECT_PROJECT, B.SUBJECT_COMP]
     """ list of object-attributes """
     LIST_NODES = [B.NODE_ATTRIBUTES]
-    LIST_SUBTABLES = [B.SUBJECT_COMPS]
+    LIST_SUBTABLES = []
     """ list of object-attributes """
     name = ""
     description = ""