diff --git a/application/libraries/issues/PlausicheckDefinitionLib.php b/application/libraries/issues/PlausicheckDefinitionLib.php
index 462917297..ed8fff1b2 100644
--- a/application/libraries/issues/PlausicheckDefinitionLib.php
+++ b/application/libraries/issues/PlausicheckDefinitionLib.php
@@ -12,6 +12,7 @@ class PlausicheckDefinitionLib
 	private $_fehlerLibMappings = array(
 		'AbbrecherAktiv' => 'AbbrecherAktiv',
 		'AbschlussstatusFehlt' => 'AbschlussstatusFehlt',
+		'AbschlusspruefungOderAbsolventFehlt' => 'AbschlusspruefungOderAbsolventFehlt',
 		'AktSemesterNull' => 'AktSemesterNull',
 		'AktiverStudentOhneStatus' => 'AktiverStudentOhneStatus',
 		'AusbildungssemPrestudentUngleichAusbildungssemStatus' => 'AusbildungssemPrestudentUngleichAusbildungssemStatus',
@@ -32,10 +33,13 @@ class PlausicheckDefinitionLib
 		'IncomingOrGsFoerderrelevant' => 'IncomingOrGsFoerderrelevant',
 		'InskriptionVorLetzerBismeldung' => 'InskriptionVorLetzerBismeldung',
 		'NationNichtOesterreichAberGemeinde' => 'NationNichtOesterreichAberGemeinde',
+		'OrgformBewerberUngleichOrgformStudent' => 'OrgformBewerberUngleichOrgformStudent',
 		'OrgformStgUngleichOrgformPrestudent' => 'OrgformStgUngleichOrgformPrestudent',
 		'PrestudentMischformOhneOrgform' => 'PrestudentMischformOhneOrgform',
+		'StartsemesterUngleichPersonenkennzeichen' => 'StartsemesterUngleichPersonenkennzeichen',
 		'StgPrestudentUngleichStgStudienplan' => 'StgPrestudentUngleichStgStudienplan',
 		'StgPrestudentUngleichStgStudent' => 'StgPrestudentUngleichStgStudent',
+		'StudentstatusNachDiplomand' => 'StudentstatusNachDiplomand',
 		'StudentstatusNachAbbrecher' => 'StudentstatusNachAbbrecher'
 		//'StudienplanUngueltig' => 'StudienplanUngueltig'
 	);
diff --git a/application/libraries/issues/plausichecks/AbschlusspruefungOderAbsolventFehlt.php b/application/libraries/issues/plausichecks/AbschlusspruefungOderAbsolventFehlt.php
new file mode 100644
index 000000000..d45db1c6c
--- /dev/null
+++ b/application/libraries/issues/plausichecks/AbschlusspruefungOderAbsolventFehlt.php
@@ -0,0 +1,150 @@
+<?php
+
+if (! defined('BASEPATH')) exit('No direct script access allowed');
+
+require_once('PlausiChecker.php');
+
+/**
+ *
+ */
+class AbschlusspruefungOderAbsolventFehlt extends PlausiChecker
+{
+	public function executePlausiCheck($params)
+	{
+		$results = array();
+
+		// get parameters from config
+		$exkludierte_studiengang_kz = isset($this->_config['exkludierteStudiengaenge']) ? $this->_config['exkludierteStudiengaenge'] : null;
+
+		// pass parameters needed for plausicheck
+		$studiensemester_kurzbz = isset($params['studiensemester_kurzbz']) ? $params['studiensemester_kurzbz'] : null;
+		$studiengang_kz = isset($params['studiengang_kz']) ? $params['studiengang_kz'] : null;
+
+		// get all students failing the plausicheck
+		$prestudentRes = $this->getAbschlusspruefungOderAbsolventFehlt($studiensemester_kurzbz, $studiengang_kz, null, $exkludierte_studiengang_kz);
+
+		if (isError($prestudentRes)) return $prestudentRes;
+
+		if (hasData($prestudentRes))
+		{
+			$prestudents = getData($prestudentRes);
+
+			// populate results with data necessary for writing issues
+			foreach ($prestudents as $prestudent)
+			{
+				$results[] = array(
+					'person_id' => $prestudent->person_id,
+					'oe_kurzbz' => $prestudent->prestudent_stg_oe_kurzbz,
+					'fehlertext_params' => array('prestudent_id' => $prestudent->prestudent_id),
+					'resolution_params' => array('prestudent_id' => $prestudent->prestudent_id)
+				);
+			}
+		}
+
+		// return the results
+		return success($results);
+	}
+
+	/**
+	 * If there is a final exam, there should be an absolvent status (and vice versa).
+	 * @param studiensemester_kurzbz Status from this and previous semester is checked
+	 * @param studiengang_kz int if check is to be executed for certain Studiengang
+	 * @param prestudent_id int if check is to be executed only for one prestudent
+	 * @param exkludierte_studiengang_kz array if certain Studiengänge have to be excluded from check
+	 * @return success with prestudents or error
+	 */
+	public function getAbschlusspruefungOderAbsolventFehlt($studiensemester_kurzbz = null, $studiengang_kz = null, $prestudent_id = null, $exkludierte_studiengang_kz = null)
+	{
+		$params = array();
+
+
+		$qry = "
+				SELECT  person_id, prestudent_id, studiengang_kz, prestudent_stg_oe_kurzbz FROM (
+					WITH meldestichtag AS (
+						SELECT
+							meldestichtag, studiensemester_kurzbz
+						FROM
+							bis.tbl_bismeldestichtag";
+
+		if (isset($studiensemester_kurzbz))
+		{
+			$this->_ci->load->model('organisation/Studiensemester_model', 'StudiensemesterModel');
+			$prevStudiensemesterRes = $this->_ci->StudiensemesterModel->getPreviousFrom($studiensemester_kurzbz);
+
+			if (isError($prevStudiensemesterRes)) return $prevStudiensemesterRes;
+
+			$semesterArr = array($studiensemester_kurzbz);
+
+			if (hasData($prevStudiensemesterRes))
+			{
+				// if Studiensemester given, check only if has status in current or previous semester
+				$semesterArr[] = getData($prevStudiensemesterRes)[0]->studiensemester_kurzbz;
+			}
+
+			$qry .= " WHERE studiensemester_kurzbz IN ?";
+
+			$params[] = $semesterArr;
+		}
+
+			$qry .= "
+					)
+					SELECT
+						DISTINCT ON (prestudent_id) prestudent.person_id, prestudent.prestudent_id,
+						stg.studiengang_kz, stg.oe_kurzbz AS prestudent_stg_oe_kurzbz,
+						EXISTS (
+							SELECT 1
+							FROM
+								lehre.tbl_abschlusspruefung pr
+							WHERE
+								student_uid = benutzer.uid
+								AND abschlussbeurteilung_kurzbz <> 'nicht'
+								AND pr.datum < meldestichtag.meldestichtag
+						) AS hat_pruefung,
+						(status.status_kurzbz IS NOT NULL) AS hat_absolvent,
+						(status.ausbildungssemester = stg.max_semester) AS absolvent_in_letztem_semester
+					FROM
+						meldestichtag
+						CROSS JOIN public.tbl_student student
+						JOIN public.tbl_prestudent prestudent USING (prestudent_id)
+						JOIN public.tbl_benutzer benutzer ON (benutzer.uid = student.student_uid)
+						JOIN public.tbl_studiengang stg ON prestudent.studiengang_kz = stg.studiengang_kz
+						LEFT JOIN public.tbl_prestudentstatus status
+							ON status.prestudent_id = prestudent.prestudent_id
+							AND status.status_kurzbz = 'Absolvent'
+							AND status.datum < meldestichtag.meldestichtag
+						WHERE EXISTS (
+							SELECT 1
+							FROM
+								public.tbl_prestudentstatus
+							WHERE
+								prestudent_id = prestudent.prestudent_id
+								AND studiensemester_kurzbz = meldestichtag.studiensemester_kurzbz
+						)";
+
+		if (isset($studiengang_kz))
+		{
+			$qry .= " AND stg.studiengang_kz = ?";
+			$params[] = $studiengang_kz;
+		}
+
+		if (isset($prestudent_id))
+		{
+			$qry .= " AND prestudent.prestudent_id = ?";
+			$params[] = $prestudent_id;
+		}
+
+		if (isset($exkludierte_studiengang_kz) && !isEmptyArray($exkludierte_studiengang_kz))
+		{
+			$qry .= " AND stg.studiengang_kz NOT IN ?";
+			$params[] = $exkludierte_studiengang_kz;
+		}
+
+		$qry .=	"
+				) prestudenten
+				WHERE
+					(hat_absolvent AND absolvent_in_letztem_semester AND hat_pruefung = FALSE)
+					OR (hat_pruefung AND hat_absolvent = FALSE)";
+
+		return $this->_db->execReadOnlyQuery($qry, $params);
+	}
+}
diff --git a/application/libraries/issues/plausichecks/BeginndatumVorBismeldung.php b/application/libraries/issues/plausichecks/BeginndatumVorBismeldung.php
index 70fcec720..16ea49a58 100644
--- a/application/libraries/issues/plausichecks/BeginndatumVorBismeldung.php
+++ b/application/libraries/issues/plausichecks/BeginndatumVorBismeldung.php
@@ -57,7 +57,7 @@ class BeginndatumVorBismeldung extends PlausiChecker
 	}
 
 	/**
-	 * Bewerber should have participated in Reihungstest.
+	 * Beginndatum shouldn't be before Bismeldedatum if the Bismeldedatum has already  been reached.
 	 * @param studiensemester_kurzbz string check is to be executed for certain Studiensemester
 	 * @param studiengang_kz int if check is to be executed for certain Studiengang
 	 * @param prestudent_id int if check is to be executed only for one prestudent
@@ -94,7 +94,7 @@ class BeginndatumVorBismeldung extends PlausiChecker
 			WHERE
 				status.datum < ?::date
 				AND status.studiensemester_kurzbz = ?
-				AND status.insertamum > ?::date
+				AND status.insertamum > ?::date + interval '1' day
 				AND stg.melderelevant
 				AND prestudent.bismelden";
 
diff --git a/application/libraries/issues/plausichecks/FalscheStatusabfolgeVorStudentstatus.php b/application/libraries/issues/plausichecks/FalscheStatusabfolgeVorStudentstatus.php
index 99d43978a..bd1e792c6 100644
--- a/application/libraries/issues/plausichecks/FalscheStatusabfolgeVorStudentstatus.php
+++ b/application/libraries/issues/plausichecks/FalscheStatusabfolgeVorStudentstatus.php
@@ -9,6 +9,8 @@ require_once('PlausiChecker.php');
  */
 class FalscheStatusabfolgeVorStudentstatus extends PlausiChecker
 {
+	private $_statusAbfolge = array('Interessent', 'Bewerber', 'Aufgenommener', 'Student');
+
 	public function executePlausiCheck($params)
 	{
 		$studiensemester_kurzbz = isset($params['studiensemester_kurzbz']) ? $params['studiensemester_kurzbz'] : null;
@@ -44,11 +46,11 @@ class FalscheStatusabfolgeVorStudentstatus extends PlausiChecker
 					'oe_kurzbz' => $prestudent->prestudent_stg_oe_kurzbz,
 					'fehlertext_params' => array(
 						'prestudent_id' => $prestudent->prestudent_id,
-						'studiensemester_kurzbz' => $prestudent->studiensemester_kurzbz
+						'studiensemester_kurzbz' => $prestudent->studiensemester_kurzbz,
+						'status_abfolge' => implode(', ', $this->_statusAbfolge)
 					),
 					'resolution_params' => array(
-						'prestudent_id' => $prestudent->prestudent_id,
-						'studiensemester_kurzbz' => $prestudent->studiensemester_kurzbz
+						'prestudent_id' => $prestudent->prestudent_id
 					)
 				);
 			}
@@ -59,7 +61,7 @@ class FalscheStatusabfolgeVorStudentstatus extends PlausiChecker
 	}
 
 	/**
-	 * Bewerber should have participated in Reihungstest.
+	 * There should be certain order of status before the student status.
 	 * @param studiensemester_kurzbz string check is to be executed for certain Studiensemester
 	 * @param studiengang_kz int if check is to be executed for certain Studiengang
 	 * @param prestudent_id int if check is to be executed only for one prestudent
@@ -72,7 +74,7 @@ class FalscheStatusabfolgeVorStudentstatus extends PlausiChecker
 		$prestudent_id = null,
 		$exkludierte_studiengang_kz = null
 	) {
-		$params = array();
+		$params = array($this->_statusAbfolge);
 
 		$qry = "
 			SELECT
@@ -95,7 +97,7 @@ class FalscheStatusabfolgeVorStudentstatus extends PlausiChecker
 					LEFT JOIN bis.tbl_orgform USING(orgform_kurzbz)
 					JOIN public.tbl_studiengang stg USING(studiengang_kz)
 				WHERE
-					status.status_kurzbz IN ('Interessent', 'Bewerber', 'Aufgenommener', 'Student')
+					status.status_kurzbz IN ?
 					AND stg.melderelevant
 					AND prestudent.bismelden
 					-- there should be a student already
@@ -110,15 +112,27 @@ class FalscheStatusabfolgeVorStudentstatus extends PlausiChecker
 					)
 			) prestudents
 			WHERE
-			(
-				-- incorrect order
-				(status_kurzbz = 'Interessent' AND prev_status_kurzbz NOT IN ('Interessent') AND prev_status_kurzbz IS NOT NULL)
-				OR (
-					(status_kurzbz <> 'Interessent' AND prev_status_kurzbz IS NULL)
-					OR (status_kurzbz = 'Bewerber' AND prev_status_kurzbz NOT IN ('Bewerber', 'Interessent'))
-					OR (status_kurzbz = 'Aufgenommener' AND prev_status_kurzbz NOT IN ('Aufgenommener', 'Bewerber'))
-					OR (status_kurzbz = 'Student' AND prev_status_kurzbz NOT IN ('Student', 'Aufgenommener'))
-				)
+			(";
+
+		foreach ($this->_statusAbfolge as $idx => $status_kurzbz)
+		{
+			// previous status should be either same status, or previous status, or null in case of first status
+			if ($idx != 0)$qry .= " OR ";
+			$qry .= " (status_kurzbz = ? AND prev_status_kurzbz NOT IN ?";
+			$prev_status_kurzbz = array($status_kurzbz);
+
+			if ($idx == 0)
+				$qry .= " AND prev_status_kurzbz IS NOT NULL";
+			else
+				$prev_status_kurzbz[] = $this->_statusAbfolge[$idx - 1];
+
+			$qry .= ')';
+
+			$params[] = $status_kurzbz;
+			$params[] = $prev_status_kurzbz;
+		}
+
+		$qry .= "
 			)";
 
 		if (isset($studiensemester_kurzbz))
diff --git a/application/libraries/issues/plausichecks/OrgformBewerberUngleichOrgformStudent.php b/application/libraries/issues/plausichecks/OrgformBewerberUngleichOrgformStudent.php
new file mode 100644
index 000000000..2064fa252
--- /dev/null
+++ b/application/libraries/issues/plausichecks/OrgformBewerberUngleichOrgformStudent.php
@@ -0,0 +1,150 @@
+<?php
+
+if (! defined('BASEPATH')) exit('No direct script access allowed');
+
+require_once('PlausiChecker.php');
+
+/**
+ *
+ */
+class OrgformBewerberUngleichorgformStudent extends PlausiChecker
+{
+	public function executePlausiCheck($params)
+	{
+		$results = array();
+
+		// get parameters from config
+		$exkludierte_studiengang_kz = isset($this->_config['exkludierteStudiengaenge']) ? $this->_config['exkludierteStudiengaenge'] : null;
+
+		// pass parameters needed for plausicheck
+		$studiensemester_kurzbz = isset($params['studiensemester_kurzbz']) ? $params['studiensemester_kurzbz'] : null;
+		$studiengang_kz = isset($params['studiengang_kz']) ? $params['studiengang_kz'] : null;
+
+		// get all students failing the plausicheck
+		$prestudentRes = $this->getOrgformBewerberUngleichorgformStudent(
+			$studiensemester_kurzbz,
+			$studiengang_kz,
+			null,
+			$exkludierte_studiengang_kz
+		);
+
+		if (isError($prestudentRes)) return $prestudentRes;
+
+		if (hasData($prestudentRes))
+		{
+			$prestudents = getData($prestudentRes);
+
+			// populate results with data necessary for writing issues
+			foreach ($prestudents as $prestudent)
+			{
+				$results[] = array(
+					'person_id' => $prestudent->person_id,
+					'oe_kurzbz' => $prestudent->prestudent_stg_oe_kurzbz,
+					'fehlertext_params' => array(
+						'prestudent_id' => $prestudent->prestudent_id,
+						'studiensemester_kurzbz' => $prestudent->studiensemester_kurzbz,
+						'bewerber_studiensemester_kurzbz' => $prestudent->bewerber_studiensemester_kurzbz
+					),
+					'resolution_params' => array(
+						'prestudent_id' => $prestudent->prestudent_id,
+						'studiensemester_kurzbz' => $prestudent->studiensemester_kurzbz
+					)
+				);
+			}
+		}
+
+		// return the results
+		return success($results);
+	}
+
+	/**
+	 * Orgform of Bewerber should be same as of student (Orgform of Status AND Studienplan)
+	 * @param studiensemester_kurzbz string check is to be executed for certain Studiensemester
+	 * @param studiengang_kz int if check is to be executed for certain Studiengang
+	 * @param prestudent_id int if check is to be executed only for one prestudent
+	 * @param exkludierte_studiengang_kz array if certain Studiengänge have to be excluded from check
+	 * @return success with prestudents or error
+	 */
+	public function getOrgformBewerberUngleichorgformStudent(
+		$studiensemester_kurzbz,
+		$studiengang_kz = null,
+		$prestudent_id = null,
+		$exkludierte_studiengang_kz = null
+	) {
+		$params = array();
+
+		$qry = "
+			SELECT
+				DISTINCT ON (prestudent.prestudent_id) prestudent.person_id, prestudent.prestudent_id, students.studiensemester_kurzbz,
+				bewerber_status.studiensemester_kurzbz AS bewerber_studiensemester_kurzbz, stg.oe_kurzbz AS prestudent_stg_oe_kurzbz
+			FROM
+				public.tbl_prestudent prestudent
+				JOIN public.tbl_prestudentstatus bewerber_status ON prestudent.prestudent_id = bewerber_status.prestudent_id AND bewerber_status.status_kurzbz = 'Bewerber'
+				JOIN lehre.tbl_studienplan bewerber_studienplan ON bewerber_status.studienplan_id = bewerber_studienplan.studienplan_id
+				JOIN (
+					SELECT
+						DISTINCT ON (prestudent_id) prestudent_id, st.studiensemester_kurzbz,
+						st.orgform_kurzbz, pl.orgform_kurzbz AS studienplan_orgform_kurzbz
+					FROM
+						public.tbl_prestudentstatus st
+						JOIN lehre.tbl_studienplan pl USING (studienplan_id)
+					WHERE
+						status_kurzbz = 'Student'
+					ORDER BY
+						st.prestudent_id, st.datum, st.insertamum, st.ext_id
+				) students ON prestudent.prestudent_id = students.prestudent_id
+				JOIN public.tbl_studiengang stg ON prestudent.studiengang_kz = stg.studiengang_kz
+			WHERE
+				prestudent.bismelden
+				AND stg.melderelevant
+				AND (
+					bewerber_status.orgform_kurzbz <> students.orgform_kurzbz
+					OR bewerber_studienplan.orgform_kurzbz <> students.studienplan_orgform_kurzbz
+				)";
+
+		if (isset($studiensemester_kurzbz))
+		{
+			$this->_ci->load->model('organisation/Studiensemester_model', 'StudiensemesterModel');
+			$prevStudiensemesterRes = $this->_ci->StudiensemesterModel->getPreviousFrom($studiensemester_kurzbz);
+
+			if (isError($prevStudiensemesterRes)) return $prevStudiensemesterRes;
+
+			$semesterArr = array($studiensemester_kurzbz);
+
+			if (hasData($prevStudiensemesterRes))
+			{
+				// if Studiensemester given, check only if has status in current or previous semester
+				$semesterArr[] = getData($prevStudiensemesterRes)[0]->studiensemester_kurzbz;
+			}
+
+			$qry .= " AND EXISTS (
+						SELECT 1
+						FROM public.tbl_prestudentstatus ps
+						WHERE studiensemester_kurzbz IN ?
+						AND ps.prestudent_id = prestudent.prestudent_id
+					)";
+
+			$params[] = $semesterArr;
+		}
+
+		if (isset($studiengang_kz))
+		{
+			$qry .= " AND studiengang.studiengang_kz = ?";
+			$params[] = $studiengang_kz;
+		}
+
+		if (isset($prestudent_id))
+		{
+			$qry .= " AND prestudent.prestudent_id = ?";
+			$params[] = $prestudent_id;
+		}
+
+		if (isset($exkludierte_studiengang_kz) && !isEmptyArray($exkludierte_studiengang_kz))
+		{
+			$qry .= " AND stg.studiengang_kz NOT IN ?";
+			$params[] = $exkludierte_studiengang_kz;
+		}
+
+		return $this->_db->execReadOnlyQuery($qry, $params);
+	}
+}
diff --git a/application/libraries/issues/plausichecks/StartsemesterUngleichPersonenkennzeichen.php b/application/libraries/issues/plausichecks/StartsemesterUngleichPersonenkennzeichen.php
new file mode 100644
index 000000000..9d38658a1
--- /dev/null
+++ b/application/libraries/issues/plausichecks/StartsemesterUngleichPersonenkennzeichen.php
@@ -0,0 +1,151 @@
+<?php
+
+if (! defined('BASEPATH')) exit('No direct script access allowed');
+
+require_once('PlausiChecker.php');
+
+/**
+ *
+ */
+class StartsemesterUngleichPersonenkennzeichen extends PlausiChecker
+{
+	public function executePlausiCheck($params)
+	{
+		$results = array();
+
+		// get parameters from config
+		$exkludierte_studiengang_kz = isset($this->_config['exkludierteStudiengaenge']) ? $this->_config['exkludierteStudiengaenge'] : null;
+
+		// pass parameters needed for plausicheck
+		$studiensemester_kurzbz = isset($params['studiensemester_kurzbz']) ? $params['studiensemester_kurzbz'] : null;
+		$studiengang_kz = isset($params['studiengang_kz']) ? $params['studiengang_kz'] : null;
+
+		// get all students failing the plausicheck
+		$prestudentRes = $this->getStartsemesterUngleichPersonenkennzeichen(
+			$studiensemester_kurzbz,
+			$studiengang_kz,
+			null,
+			$exkludierte_studiengang_kz
+		);
+
+		if (isError($prestudentRes)) return $prestudentRes;
+
+		if (hasData($prestudentRes))
+		{
+			$prestudents = getData($prestudentRes);
+
+			// populate results with data necessary for writing issues
+			foreach ($prestudents as $prestudent)
+			{
+				$results[] = array(
+					'person_id' => $prestudent->person_id,
+					'oe_kurzbz' => $prestudent->prestudent_stg_oe_kurzbz,
+					'fehlertext_params' => array(
+						'prestudent_id' => $prestudent->prestudent_id
+					),
+					'resolution_params' => array(
+						'prestudent_id' => $prestudent->prestudent_id
+					)
+				);
+			}
+		}
+
+		// return the results
+		return success($results);
+	}
+
+	/**
+	 * Bewerber should have participated in Reihungstest.
+	 * @param studiensemester_kurzbz string check is to be executed for certain Studiensemester
+	 * @param studiengang_kz int if check is to be executed for certain Studiengang
+	 * @param prestudent_id int if check is to be executed only for one prestudent
+	 * @param exkludierte_studiengang_kz array if certain Studiengänge have to be excluded from check
+	 * @return success with prestudents or error
+	 */
+	public function getStartsemesterUngleichPersonenkennzeichen(
+		$studiensemester_kurzbz = null,
+		$studiengang_kz = null,
+		$prestudent_id = null,
+		$exkludierte_studiengang_kz = null
+	) {
+		$params = array();
+
+		$qry = "
+				SELECT
+					prestudent.person_id, prestudent.prestudent_id,
+					stg.studiengang_kz, stg.oe_kurzbz AS prestudent_stg_oe_kurzbz
+				FROM
+					public.tbl_prestudent prestudent
+					JOIN public.tbl_studiengang stg USING (studiengang_kz)
+					JOIN public.tbl_student stud USING (prestudent_id)
+				WHERE
+					stg.melderelevant
+					AND prestudent.bismelden
+					AND
+					(
+						SELECT
+							substring(studiensemester_kurzbz, 5, 2)::integer -
+							(CASE
+								WHEN
+									substring(studiensemester_kurzbz, 1, 2) = 'SS'
+								THEN
+									1
+								ELSE
+									0
+							END)::integer
+						FROM
+							public.tbl_prestudentstatus
+						WHERE
+							prestudent_id = prestudent.prestudent_id
+							AND status_kurzbz = 'Student'
+						ORDER BY
+							datum, insertamum, ext_id
+						LIMIT 1
+					) <> substring(stud.matrikelnr, 1, 2)::integer";
+
+		if (isset($studiensemester_kurzbz))
+		{
+			$this->_ci->load->model('organisation/Studiensemester_model', 'StudiensemesterModel');
+			$prevStudiensemesterRes = $this->_ci->StudiensemesterModel->getPreviousFrom($studiensemester_kurzbz);
+
+			if (isError($prevStudiensemesterRes)) return $prevStudiensemesterRes;
+
+			$semesterArr = array($studiensemester_kurzbz);
+
+			if (hasData($prevStudiensemesterRes))
+			{
+				// if Studiensemester given, check only if has status in current or previous semester
+				$semesterArr[] = getData($prevStudiensemesterRes)[0]->studiensemester_kurzbz;
+			}
+
+			$qry .= " AND EXISTS (
+						SELECT 1
+						FROM public.tbl_prestudentstatus ps
+						WHERE studiensemester_kurzbz IN ?
+						AND ps.prestudent_id = prestudent.prestudent_id
+					)";
+
+			$params[] = $semesterArr;
+		}
+
+		if (isset($studiengang_kz))
+		{
+			$qry .= " AND studiengang_kz = ?";
+			$params[] = $studiengang_kz;
+		}
+
+		if (isset($prestudent_id))
+		{
+			$qry .= " AND prestudent_id = ?";
+			$params[] = $prestudent_id;
+		}
+
+		if (isset($exkludierte_studiengang_kz) && !isEmptyArray($exkludierte_studiengang_kz))
+		{
+			$qry .= " AND stg.studiengang_kz NOT IN ?";
+			$params[] = $exkludierte_studiengang_kz;
+		}
+
+		return $this->_db->execReadOnlyQuery($qry, $params);
+	}
+}
diff --git a/application/libraries/issues/plausichecks/StudentstatusNachDiplomand.php b/application/libraries/issues/plausichecks/StudentstatusNachDiplomand.php
new file mode 100644
index 000000000..d58263ace
--- /dev/null
+++ b/application/libraries/issues/plausichecks/StudentstatusNachDiplomand.php
@@ -0,0 +1,98 @@
+<?php
+
+if (! defined('BASEPATH')) exit('No direct script access allowed');
+
+require_once('PlausiChecker.php');
+
+/**
+ *
+ */
+class StudentstatusNachDiplomand extends PlausiChecker
+{
+	public function executePlausiCheck($params)
+	{
+		$results = array();
+
+		// get parameters from config
+		$exkludierte_studiengang_kz = isset($this->_config['exkludierteStudiengaenge']) ? $this->_config['exkludierteStudiengaenge'] : null;
+
+		// pass parameters needed for plausicheck
+		$studiengang_kz = isset($params['studiengang_kz']) ? $params['studiengang_kz'] : null;
+
+		// get all students failing the plausicheck
+		$prestudentRes = $this->getStudentstatusNachDiplomand($studiengang_kz, null, $exkludierte_studiengang_kz);
+
+		if (isError($prestudentRes)) return $prestudentRes;
+
+		if (hasData($prestudentRes))
+		{
+			$prestudents = getData($prestudentRes);
+
+			// populate results with data necessary for writing issues
+			foreach ($prestudents as $prestudent)
+			{
+				$results[] = array(
+					'person_id' => $prestudent->person_id,
+					'oe_kurzbz' => $prestudent->prestudent_stg_oe_kurzbz,
+					'fehlertext_params' => array('prestudent_id' => $prestudent->prestudent_id),
+					'resolution_params' => array('prestudent_id' => $prestudent->prestudent_id)
+				);
+			}
+		}
+
+		// return the results
+		return success($results);
+	}
+
+	/**
+	 * There shouldn't be any student status after Diplomand status.
+	 * @param studiengang_kz int if check is to be executed for certain Studiengang
+	 * @param prestudent_id int if check is to be executed only for one prestudent
+	 * @param exkludierte_studiengang_kz array if certain Studiengänge have to be excluded from check
+	 * @return success with prestudents or error
+	 */
+	public function getStudentstatusNachDiplomand($studiengang_kz = null, $prestudent_id = null, $exkludierte_studiengang_kz = null)
+	{
+		$params = array();
+
+		$qry = "
+			SELECT
+				DISTINCT prestudent.person_id, prestudent.prestudent_id, stg.oe_kurzbz AS prestudent_stg_oe_kurzbz
+			FROM
+				public.tbl_student student
+				JOIN public.tbl_prestudent prestudent USING(prestudent_id)
+				JOIN public.tbl_prestudentstatus status USING(prestudent_id)
+				JOIN public.tbl_studiengang stg ON prestudent.studiengang_kz = stg.studiengang_kz
+			WHERE
+				status.status_kurzbz = 'Diplomand'
+				AND EXISTS (
+					SELECT 1
+					FROM
+						public.tbl_prestudentstatus
+					WHERE
+						prestudent_id = prestudent.prestudent_id
+						AND status_kurzbz = 'Student'
+						AND datum::date > status.datum::date
+				)";
+
+		if (isset($studiengang_kz))
+		{
+			$qry .= " AND stg.studiengang_kz = ?";
+			$params[] = $studiengang_kz;
+		}
+
+		if (isset($prestudent_id))
+		{
+			$qry .= " AND prestudent.prestudent_id = ?";
+			$params[] = $prestudent_id;
+		}
+
+		if (isset($exkludierte_studiengang_kz) && !isEmptyArray($exkludierte_studiengang_kz))
+		{
+			$qry .= " AND stg.studiengang_kz NOT IN ?";
+			$params[] = $exkludierte_studiengang_kz;
+		}
+
+		return $this->_db->execReadOnlyQuery($qry, $params);
+	}
+}
diff --git a/system/fehlerupdate.php b/system/fehlerupdate.php
index 48b6481d6..43a39673d 100644
--- a/system/fehlerupdate.php
+++ b/system/fehlerupdate.php
@@ -303,9 +303,41 @@ $fehlerArr = array(
 	),
 	array(
 		'fehlercode' => 'CORE_STUDENTSTATUS_0018',
+		'fehler_kurzbz' => 'StudentstatusNachDiplomand',
+		'fehlercode_extern' => null,
+		'fehlertext' => 'Studentstatus nach Diplomandenstatus (prestudent_id %s)',
+		'fehlertyp_kurzbz' => 'error',
+		'app' => 'core'
+	),
+	array(
+		'fehlercode' => 'CORE_STUDENTSTATUS_0019',
+		'fehler_kurzbz' => 'OrgformBewerberUngleichOrgformStudent',
+		'fehlercode_extern' => null,
+		'fehlertext' => 'Orgform des Bewerbers stimmt nicht mit Orgform des Studenten überein (Status oder Studienplan) (prestudent_id %s, Student Studiensemester %s, Bewerber Studiensemester %s)',
+		'fehlertyp_kurzbz' => 'error',
+		'app' => 'core'
+	),
+	array(
+		'fehlercode' => 'CORE_STUDENTSTATUS_0020',
+		'fehler_kurzbz' => 'StartsemesterUngleichPersonenkennzeichen',
+		'fehlercode_extern' => null,
+		'fehlertext' => 'Semester des ersten Studentstatus stimmt nicht mit Personenkennzeichen überein (prestudent_id %s)',
+		'fehlertyp_kurzbz' => 'error',
+		'app' => 'core'
+	),
+	array(
+		'fehlercode' => 'CORE_STUDENTSTATUS_0021',
+		'fehler_kurzbz' => 'AbschlusspruefungOderAbsolventFehlt',
+		'fehlercode_extern' => null,
+		'fehlertext' => 'Keine Abschlussprüfung vor der Bismeldung oder kein Absolventenstatus vor der Bismeldung (prestudent_id %s)',
+		'fehlertyp_kurzbz' => 'error',
+		'app' => 'core'
+	),
+	array(
+		'fehlercode' => 'CORE_STUDENTSTATUS_0022',
 		'fehler_kurzbz' => 'FalscheStatusabfolgeVorStudentstatus',
 		'fehlercode_extern' => null,
-		'fehlertext' => 'Falsche Statusabfolge vor Studentstatus (prestudent_id %s, Studiensemester %s)',
+		'fehlertext' => 'Falsche Statusabfolge vor Studentstatus (prestudent_id %s, Studiensemester%s, richtige Abfolge: %s)',
 		'fehlertyp_kurzbz' => 'error',
 		'app' => 'core'
 	),