diff --git a/compensation/models.py b/compensation/models.py
index 5367b2e2..c672714e 100644
--- a/compensation/models.py
+++ b/compensation/models.py
@@ -19,7 +19,7 @@ from codelist.settings import CODELIST_COMPENSATION_ACTION_ID, CODELIST_BIOTOPES
     CODELIST_COMPENSATION_FUNDING_ID
 from compensation.managers import CompensationStateManager, EcoAccountDeductionManager, CompensationActionManager, \
     EcoAccountManager, CompensationManager
-from compensation.utils.quality import CompensationQualityChecker
+from compensation.utils.quality import CompensationQualityChecker, EcoAccountQualityChecker
 from intervention.models import Intervention, ResponsibilityData, LegalData
 from konova.models import BaseObject, BaseResource, Geometry, UuidModel, AbstractDocument, \
     generate_document_file_upload_path
@@ -447,17 +447,15 @@ class EcoAccount(AbstractCompensation):
             y,
         )
 
-    def quality_check(self) -> list:
+    def quality_check(self) -> EcoAccountQualityChecker:
         """ Quality check
 
         Returns:
-            ret_msgs (list): Holds error messages
+            ret_msgs (EcoAccountQualityChecker): Holds validity and error messages
         """
-        ret_msgs = []
-
-        # ToDo: Add check methods!
-
-        return ret_msgs
+        checker = EcoAccountQualityChecker(self)
+        checker.run_check()
+        return checker
 
     def get_documents(self) -> QuerySet:
         """ Getter for all documents of an EcoAccount
diff --git a/compensation/utils/quality.py b/compensation/utils/quality.py
index 0e3c2cf0..28002db4 100644
--- a/compensation/utils/quality.py
+++ b/compensation/utils/quality.py
@@ -46,3 +46,59 @@ class CompensationQualityChecker(AbstractQualityChecker):
         """
         if not self.obj.actions.all():
             self._add_missing_attr_name(_con("Compensation", "Actions"))
+
+
+class EcoAccountQualityChecker(CompensationQualityChecker):
+    def run_check(self):
+        """ Checks on data quality for an EcoAccount
+
+        Returns:
+
+        """
+        self._check_deductable_surface()
+        self._check_responsible_data()
+        self._check_legal_data()
+        super().run_check()
+
+    def _check_legal_data(self):
+        """ Checks the data quality for LegalData
+
+        Returns:
+
+        """
+        try:
+            legal = self.obj.legal
+            if legal.registration_date is None:
+                self._add_missing_attr_name(_("Agreement date"))
+        except AttributeError:
+            self._add_missing_attr_name(_("Legal data"))
+
+    def _check_deductable_surface(self):
+        """ Checks the quality of the deductable surface value
+
+        Returns:
+
+        """
+        surface = self.obj.deductable_surface
+        if surface is None or surface == 0:
+            self._add_missing_attr_name(_("Available Surface"))
+        after_state_surface = self.obj.get_state_after_surface_sum()
+        if surface > after_state_surface:
+            self.messages.append(
+                _("Deductable surface can not be larger than state surface")
+            )
+
+    def _check_responsible_data(self):
+        """ Checks on responsible data quality
+
+        Returns:
+
+        """
+        try:
+            resp = self.obj.responsible
+            if resp.conservation_office is None:
+                self._add_missing_attr_name(_("Conservation office"))
+            if resp.conservation_file_number is None or len(resp.conservation_file_number) == 0:
+                self._add_missing_attr_name(_("Conservation office file number"))
+        except AttributeError:
+            self._add_missing_attr_name(_("Responsible data"))
diff --git a/ema/models.py b/ema/models.py
index e8d31c4f..a0b5f5e7 100644
--- a/ema/models.py
+++ b/ema/models.py
@@ -6,8 +6,9 @@ from django.db.models import QuerySet
 
 from compensation.models import AbstractCompensation
 from ema.managers import EmaManager
+from ema.utils.quality import EmaQualityChecker
 from konova.models import AbstractDocument, generate_document_file_upload_path
-from konova.settings import DEFAULT_SRID_RLP, LANIS_LINK_TEMPLATE, EMA_DOC_PATH
+from konova.settings import DEFAULT_SRID_RLP, LANIS_LINK_TEMPLATE
 from user.models import UserActionLogEntry
 
 
@@ -80,17 +81,15 @@ class Ema(AbstractCompensation):
             y,
         )
 
-    def quality_check(self) -> list:
+    def quality_check(self) -> EmaQualityChecker:
         """ Quality check
 
         Returns:
-            ret_msgs (list): Holds error messages
+            ret_msgs (EmaQualityChecker): Holds validity error messages
         """
-        ret_msgs = []
-
-        # ToDo: Add check methods!
-
-        return ret_msgs
+        checker = EmaQualityChecker(self)
+        checker.run_check()
+        return checker
 
     def get_documents(self) -> QuerySet:
         """ Getter for all documents of an EMA
diff --git a/ema/utils/quality.py b/ema/utils/quality.py
index 8c57f51f..dc7b07ca 100644
--- a/ema/utils/quality.py
+++ b/ema/utils/quality.py
@@ -5,16 +5,26 @@ Contact: michel.peltriaux@sgdnord.rlp.de
 Created on: 25.10.21
 
 """
-from konova.utils.quality import AbstractQualityChecker
+from django.utils.translation import gettext_lazy as _
+from compensation.utils.quality import CompensationQualityChecker
 
 
-class EmaQualityChecker(AbstractQualityChecker):
+class EmaQualityChecker(CompensationQualityChecker):
     def run_check(self):
-        """ Perform all defined data checks
+        super().run_check()
+        self._check_responsible_data()
+
+    def _check_responsible_data(self):
+        """ Checks on responsible data quality
 
         Returns:
 
         """
-
-        self._check_geometry()
-        self.valid = len(self.messages) == 0
+        try:
+            resp = self.obj.responsible
+            if resp.conservation_office is None:
+                self._add_missing_attr_name(_("Conservation office"))
+            if resp.conservation_file_number is None or len(resp.conservation_file_number) == 0:
+                self._add_missing_attr_name(_("Conservation office file number"))
+        except AttributeError:
+            self._add_missing_attr_name(_("Responsible data"))
diff --git a/konova/forms.py b/konova/forms.py
index 74e53896..83cf720a 100644
--- a/konova/forms.py
+++ b/konova/forms.py
@@ -472,13 +472,16 @@ class RecordModalForm(BaseModalForm):
 
         """
         super_val = super().is_valid()
-        msgs = self.instance.quality_check() or []
-        for msg in msgs:
+        if self.instance.recorded:
+            # If user wants to unrecord an already recorded dataset, we do not need to perform custom checks
+            return super_val
+        checker = self.instance.quality_check()
+        for msg in checker.messages:
             self.add_error(
                 "confirm",
                 msg
             )
-        return super_val and (len(msgs) == 0)
+        return super_val and checker.valid
 
     def save(self):
         with transaction.atomic():
diff --git a/locale/de/LC_MESSAGES/django.mo b/locale/de/LC_MESSAGES/django.mo
index f84bd186..817362f2 100644
Binary files a/locale/de/LC_MESSAGES/django.mo and b/locale/de/LC_MESSAGES/django.mo differ
diff --git a/locale/de/LC_MESSAGES/django.po b/locale/de/LC_MESSAGES/django.po
index a2995547..88d2ad0c 100644
--- a/locale/de/LC_MESSAGES/django.po
+++ b/locale/de/LC_MESSAGES/django.po
@@ -19,7 +19,7 @@ msgid ""
 msgstr ""
 "Project-Id-Version: PACKAGE VERSION\n"
 "Report-Msgid-Bugs-To: \n"
-"POT-Creation-Date: 2021-10-25 13:37+0200\n"
+"POT-Creation-Date: 2021-10-25 14:13+0200\n"
 "PO-Revision-Date: YEAR-MO-DA HO:MI+ZONE\n"
 "Last-Translator: FULL NAME <EMAIL@ADDRESS>\n"
 "Language-Team: LANGUAGE <LL@li.org>\n"
@@ -40,11 +40,11 @@ msgstr "Bis"
 #: analysis/forms.py:47 compensation/forms/forms.py:93
 #: compensation/templates/compensation/detail/eco_account/view.html:58
 #: compensation/templates/compensation/report/eco_account/report.html:16
-#: ema/templates/ema/detail/view.html:42
+#: compensation/utils/quality.py:100 ema/templates/ema/detail/view.html:42
 #: ema/templates/ema/report/report.html:16 intervention/forms/forms.py:101
 #: intervention/templates/intervention/detail/view.html:56
 #: intervention/templates/intervention/report/report.html:37
-#: intervention/utils/quality.py:51
+#: intervention/utils/quality.py:49
 msgid "Conservation office"
 msgstr "Eintragungsstelle"
 
@@ -372,11 +372,11 @@ msgstr "Zusätzlicher Kommentar"
 #: compensation/forms/forms.py:109
 #: compensation/templates/compensation/detail/eco_account/view.html:62
 #: compensation/templates/compensation/report/eco_account/report.html:20
-#: ema/templates/ema/detail/view.html:46
+#: compensation/utils/quality.py:102 ema/templates/ema/detail/view.html:46
 #: ema/templates/ema/report/report.html:20 intervention/forms/forms.py:129
 #: intervention/templates/intervention/detail/view.html:60
 #: intervention/templates/intervention/report/report.html:41
-#: intervention/utils/quality.py:44
+#: intervention/utils/quality.py:42
 msgid "Conservation office file number"
 msgstr "Aktenzeichen Eintragungsstelle"
 
@@ -414,7 +414,7 @@ msgstr "Neue Kompensation"
 msgid "Edit compensation"
 msgstr "Bearbeite Kompensation"
 
-#: compensation/forms/forms.py:290
+#: compensation/forms/forms.py:290 compensation/utils/quality.py:84
 msgid "Available Surface"
 msgstr "Verfügbare Fläche"
 
@@ -424,6 +424,7 @@ msgstr "Die für Abbuchungen zur Verfügung stehende Menge"
 
 #: compensation/forms/forms.py:302
 #: compensation/templates/compensation/detail/eco_account/view.html:66
+#: compensation/utils/quality.py:72
 msgid "Agreement date"
 msgstr "Vereinbarungsdatum"
 
@@ -804,6 +805,7 @@ msgstr "Dokument löschen"
 
 #: compensation/templates/compensation/detail/compensation/includes/states-after.html:8
 #: compensation/templates/compensation/detail/eco_account/includes/states-after.html:8
+#: compensation/utils/quality.py:39
 #: ema/templates/ema/detail/includes/states-after.html:8
 msgid "States after"
 msgstr "Zielzustand"
@@ -840,6 +842,7 @@ msgstr "Zustand entfernen"
 
 #: compensation/templates/compensation/detail/compensation/includes/states-before.html:8
 #: compensation/templates/compensation/detail/eco_account/includes/states-before.html:8
+#: compensation/utils/quality.py:37
 #: ema/templates/ema/detail/includes/states-before.html:8
 msgid "States before"
 msgstr "Ausgangszustand"
@@ -1013,10 +1016,24 @@ msgstr "In LANIS öffnen"
 msgid "Deductions for"
 msgstr "Abbuchungen für"
 
-#: compensation/utils/quality.py:35
+#: compensation/utils/quality.py:34
 msgid "States unequal"
 msgstr "Ungleiche Zustandsflächenmengen"
 
+#: compensation/utils/quality.py:74 intervention/utils/quality.py:84
+msgid "Legal data"
+msgstr "Rechtliche Daten"
+
+#: compensation/utils/quality.py:88
+msgid "Deductable surface can not be larger than state surface"
+msgstr ""
+"Die abbuchbare Fläche darf die Gesamtfläche der Zielzustände nicht "
+"überschreiten"
+
+#: compensation/utils/quality.py:104 intervention/utils/quality.py:55
+msgid "Responsible data"
+msgstr "Daten zu den verantwortlichen Stellen"
+
 #: compensation/views/compensation_views.py:77
 msgid "Compensation {} added"
 msgstr "Kompensation {} hinzugefügt"
@@ -1165,7 +1182,7 @@ msgstr "Bauvorhaben XY; Flur ABC"
 #: intervention/forms/forms.py:51
 #: intervention/templates/intervention/detail/view.html:35
 #: intervention/templates/intervention/report/report.html:16
-#: intervention/utils/quality.py:84
+#: intervention/utils/quality.py:82
 msgid "Process type"
 msgstr "Verfahrenstyp"
 
@@ -1176,14 +1193,14 @@ msgstr "Mehrfachauswahl möglich"
 #: intervention/forms/forms.py:85
 #: intervention/templates/intervention/detail/view.html:48
 #: intervention/templates/intervention/report/report.html:29
-#: intervention/utils/quality.py:48
+#: intervention/utils/quality.py:46
 msgid "Registration office"
 msgstr "Zulassungsbehörde"
 
 #: intervention/forms/forms.py:117
 #: intervention/templates/intervention/detail/view.html:52
 #: intervention/templates/intervention/report/report.html:33
-#: intervention/utils/quality.py:41
+#: intervention/utils/quality.py:39
 msgid "Registration office file number"
 msgstr "Aktenzeichen Zulassungsbehörde"
 
@@ -1194,7 +1211,7 @@ msgstr ""
 #: intervention/forms/forms.py:141
 #: intervention/templates/intervention/detail/view.html:64
 #: intervention/templates/intervention/report/report.html:45
-#: intervention/utils/quality.py:54
+#: intervention/utils/quality.py:52
 msgid "Intervention handler"
 msgstr "Eingriffsverursacher"
 
@@ -1205,7 +1222,7 @@ msgstr "Wer führt den Eingriff durch"
 #: intervention/forms/forms.py:154
 #: intervention/templates/intervention/detail/view.html:96
 #: intervention/templates/intervention/report/report.html:83
-#: intervention/utils/quality.py:75
+#: intervention/utils/quality.py:73
 msgid "Registration date"
 msgstr "Datum Zulassung bzw. Satzungsbeschluss"
 
@@ -1389,27 +1406,19 @@ msgstr "Abbuchungen von Ökokonten"
 msgid "Exist"
 msgstr "Vorhanden"
 
-#: intervention/utils/quality.py:57
-msgid "Responsible data"
-msgstr "Daten zu den verantwortlichen Stellen"
-
-#: intervention/utils/quality.py:72
+#: intervention/utils/quality.py:70
 msgid "Revocation exists"
 msgstr "Widerspruch liegt vor"
 
-#: intervention/utils/quality.py:78
+#: intervention/utils/quality.py:76
 msgid "Binding date"
 msgstr "Datum Bestandskraft"
 
-#: intervention/utils/quality.py:81
+#: intervention/utils/quality.py:79
 msgid "Laws"
 msgstr "Gesetze"
 
-#: intervention/utils/quality.py:86
-msgid "Legal data"
-msgstr "Rechtliche Daten"
-
-#: intervention/utils/quality.py:100
+#: intervention/utils/quality.py:98
 msgid "No compensation of any type found (Compensation, Payment, Deduction)"
 msgstr ""
 "Kein Ausgleich jeglicher Art gefunden (Kompensation, Ersatzzahlung, "