diff --git a/org.adempiere.base/src/org/adempiere/base/IDisplayTypeFactory.java b/org.adempiere.base/src/org/adempiere/base/IDisplayTypeFactory.java
index 1f667e62f8..53b9d7fec2 100644
--- a/org.adempiere.base/src/org/adempiere/base/IDisplayTypeFactory.java
+++ b/org.adempiere.base/src/org/adempiere/base/IDisplayTypeFactory.java
@@ -29,6 +29,9 @@ public interface IDisplayTypeFactory {
 	public Integer getDefaultPrecision(int displayType);
 	public boolean isText(int displayType);
 	public boolean isDate (int displayType);
+	public default boolean isList (int displayType) {
+		return false;
+	}
 	public boolean isLookup(int displayType);
 	public boolean isLOB (int displayType);
 	public DecimalFormat getNumberFormat(int displayType, Language language, String pattern);
diff --git a/org.adempiere.base/src/org/compiere/db/CreateAdempiere.java b/org.adempiere.base/src/org/compiere/db/CreateAdempiere.java
index 5a878c6db9..0aa7480f00 100644
--- a/org.adempiere.base/src/org/compiere/db/CreateAdempiere.java
+++ b/org.adempiere.base/src/org/compiere/db/CreateAdempiere.java
@@ -609,7 +609,7 @@ public class CreateAdempiere
 					values.append("NULL");
 				}
 				else if (DisplayType.isText(dt) || dt == DisplayType.YesNo 
-					|| dt == DisplayType.List || dt == DisplayType.Button
+					|| DisplayType.isList(dt)   || dt == DisplayType.Button
 					|| columnName.equals("AD_Language"))
 				{
 					String s = rs.getString(columnName);
diff --git a/org.adempiere.base/src/org/compiere/model/MColumn.java b/org.adempiere.base/src/org/compiere/model/MColumn.java
index b281d5ca1b..899f8c77bc 100644
--- a/org.adempiere.base/src/org/compiere/model/MColumn.java
+++ b/org.adempiere.base/src/org/compiere/model/MColumn.java
@@ -800,7 +800,7 @@ public class MColumn extends X_AD_Column implements ImmutablePOSupport
 				foreignTable = "AD_Org";
 			else if ("C_ProjectType_ID".equalsIgnoreCase(getColumnName()))
 				foreignTable = "C_ProjectType";
-		} else if (DisplayType.List == refid || DisplayType.Payment == refid) {
+		} else if (DisplayType.isList(refid) || DisplayType.Payment == refid) {
 			foreignTable = "AD_Ref_List";
 		} else if (DisplayType.Location == refid) {
 			foreignTable = "C_Location";
@@ -941,7 +941,7 @@ public class MColumn extends X_AD_Column implements ImmutablePOSupport
 		if (!column.isKey() && !column.getColumnName().equals(PO.getUUIDColumnName(table.getTableName())) && !column.isVirtualColumn())
 		{
 			int refid = column.getAD_Reference_ID();
-			if (refid != DisplayType.List && refid != DisplayType.Payment)
+			if (!DisplayType.isList(refid) && refid != DisplayType.Payment)
 			{
 				String referenceTableName = column.getReferenceTableName();
 				if (referenceTableName != null)
@@ -1153,7 +1153,7 @@ public class MColumn extends X_AD_Column implements ImmutablePOSupport
 				return "";
 
 			int refid = column.getAD_Reference_ID();
-			if (refid != DisplayType.List && refid != DisplayType.Payment)
+			if (!DisplayType.isList(refid) && refid != DisplayType.Payment)
 			{
 				String referenceTableName = column.getReferenceTableName();
 				if (referenceTableName != null)
diff --git a/org.adempiere.base/src/org/compiere/model/MLookupFactory.java b/org.adempiere.base/src/org/compiere/model/MLookupFactory.java
index dcebbbb787..0d773c78a3 100644
--- a/org.adempiere.base/src/org/compiere/model/MLookupFactory.java
+++ b/org.adempiere.base/src/org/compiere/model/MLookupFactory.java
@@ -188,7 +188,7 @@ public class MLookupFactory
 		MLookupInfo info = null;
 		boolean needToAddSecurity = true;
 		//	List
-		if (AD_Reference_ID == DisplayType.List || AD_Reference_ID == DisplayType.ChosenMultipleSelectionList || AD_Reference_ID == DisplayType.RadiogroupList)	//	17
+		if (DisplayType.isList(AD_Reference_ID))	//	17
 		{
 			info = getLookup_List(language, AD_Reference_Value_ID);
 			needToAddSecurity = false;
@@ -925,7 +925,7 @@ public class MLookupFactory
 					displayColumn.append("(").append(embeddedSQL).append(")");
 			}
 			//  List
-			else if (ldc.DisplayType == DisplayType.List)
+			else if (DisplayType.isList(ldc.DisplayType))
 			{
 				String embeddedSQL = getLookup_ListEmbed(language, ldc.AD_Reference_ID, ldc.ColumnName);
 				if (embeddedSQL != null)
diff --git a/org.adempiere.base/src/org/compiere/model/MProcessPara.java b/org.adempiere.base/src/org/compiere/model/MProcessPara.java
index 84eec30890..4d2537e3a2 100644
--- a/org.adempiere.base/src/org/compiere/model/MProcessPara.java
+++ b/org.adempiere.base/src/org/compiere/model/MProcessPara.java
@@ -348,7 +348,7 @@ public class MProcessPara extends X_AD_Process_Para implements ImmutablePOSuppor
 				if (rt != null)
 					foreignTable = rt.getAD_Table().getTableName();
 			}
-		} else 	if (DisplayType.List == getAD_Reference_ID()) {
+		} else 	if (DisplayType.isList(getAD_Reference_ID())) {
 			foreignTable = "AD_Ref_List";
 		}
 
diff --git a/org.adempiere.base/src/org/compiere/print/DataEngine.java b/org.adempiere.base/src/org/compiere/print/DataEngine.java
index c074ee75ac..562ab19748 100644
--- a/org.adempiere.base/src/org/compiere/print/DataEngine.java
+++ b/org.adempiere.base/src/org/compiere/print/DataEngine.java
@@ -456,7 +456,7 @@ public class DataEngine
 				}
 
 				//	-- List or Button with ReferenceValue --
-				else if (AD_Reference_ID == DisplayType.List 
+				else if (DisplayType.isList(AD_Reference_ID) 
 					|| (AD_Reference_ID == DisplayType.Button && AD_Reference_Value_ID != 0))
 				{
 					if (ColumnSQL.length() > 0)
diff --git a/org.adempiere.base/src/org/compiere/report/core/RColumn.java b/org.adempiere.base/src/org/compiere/report/core/RColumn.java
index bf989c31ff..277bdda94f 100644
--- a/org.adempiere.base/src/org/compiere/report/core/RColumn.java
+++ b/org.adempiere.base/src/org/compiere/report/core/RColumn.java
@@ -121,7 +121,7 @@ public class RColumn
 		else if (displayType == DisplayType.Integer)
 			m_colClass = Integer.class;
 		//  List
-		else if (displayType == DisplayType.List)
+		else if (DisplayType.isList(displayType))
 		{
 			Language language = Language.getLanguage(Env.getAD_Language(ctx));
 			m_colSQL = "(" + MLookupFactory.getLookup_ListEmbed(
diff --git a/org.adempiere.base/src/org/compiere/util/DisplayType.java b/org.adempiere.base/src/org/compiere/util/DisplayType.java
index ff787da52a..c1c86ac07f 100644
--- a/org.adempiere.base/src/org/compiere/util/DisplayType.java
+++ b/org.adempiere.base/src/org/compiere/util/DisplayType.java
@@ -363,6 +363,35 @@ public final class DisplayType
 		
 		return false;
 	}	//	isDate
+	
+	/**
+	 *	Returns true if DisplayType is a List.
+	 *  (stored as Text)
+	 *  @param displayType Display Type
+	 *  @return true if List
+	 */
+	public static boolean isList(int displayType)
+	{
+		if (DisplayType.List == displayType  || DisplayType.RadiogroupList == displayType
+				|| DisplayType.ChosenMultipleSelectionList == displayType)
+			return true;
+		
+		IServiceReferenceHolder<IDisplayTypeFactory> cache = s_displayTypeFactoryCache.get(displayType);
+		if (cache != null) {
+			IDisplayTypeFactory service = cache.getService();
+			if (service != null)
+				return service.isList(displayType);
+		}
+		Optional<IServiceReferenceHolder<IDisplayTypeFactory>> found = getDisplayTypeFactories().stream()
+					.filter(e -> e.getService() != null && e.getService().isList(displayType))
+					.findFirst();
+		if (found.isPresent()) {
+			s_displayTypeFactoryCache.put(displayType, found.get());
+			return true;
+		}
+		
+		return false;
+	}	//	isList
 
 	/**
 	 *	Returns true if DisplayType is a VLookup (List, Table, TableDir, Search).
diff --git a/org.adempiere.pipo/src/org/adempiere/pipo2/PackRollProcess.java b/org.adempiere.pipo/src/org/adempiere/pipo2/PackRollProcess.java
index 1604496cdb..68f203d16b 100644
--- a/org.adempiere.pipo/src/org/adempiere/pipo2/PackRollProcess.java
+++ b/org.adempiere.pipo/src/org/adempiere/pipo2/PackRollProcess.java
@@ -197,7 +197,7 @@ public class PackRollProcess extends SvrProcess {
 									if (v_AD_Reference_ID == DisplayType.String
 											|| v_AD_Reference_ID == DisplayType.Text
 											|| v_AD_Reference_ID == DisplayType.Memo
-											|| v_AD_Reference_ID == DisplayType.List
+											|| DisplayType.isList(v_AD_Reference_ID)
 											// Carlos Ruiz globalqss, special
 											// treatment for EntityType
 											// it's a Table reference but must
diff --git a/org.adempiere.pipo/src/org/adempiere/pipo2/PoExporter.java b/org.adempiere.pipo/src/org/adempiere/pipo2/PoExporter.java
index 5328ee0d2a..ac9888c8e6 100644
--- a/org.adempiere.pipo/src/org/adempiere/pipo2/PoExporter.java
+++ b/org.adempiere.pipo/src/org/adempiere/pipo2/PoExporter.java
@@ -255,7 +255,7 @@ public class PoExporter {
 					tableName = columnName.substring(0, columnName.length() - 3);
 				}
 				addTableReference(columnName, tableName, new AttributesImpl());
-			} else if (DisplayType.List == displayType) {
+			} else if (DisplayType.isList(displayType)) {
 				add(columnName, "", new AttributesImpl());
 			} else if (DisplayType.isLookup(displayType)) {
 				String tableName = null;
diff --git a/org.adempiere.ui.zk/WEB-INF/src/org/adempiere/webui/apps/wf/WWFActivity.java b/org.adempiere.ui.zk/WEB-INF/src/org/adempiere/webui/apps/wf/WWFActivity.java
index adf76d5ff9..ac13b286ea 100644
--- a/org.adempiere.ui.zk/WEB-INF/src/org/adempiere/webui/apps/wf/WWFActivity.java
+++ b/org.adempiere.ui.zk/WEB-INF/src/org/adempiere/webui/apps/wf/WWFActivity.java
@@ -546,7 +546,7 @@ public class WWFActivity extends ADForm implements EventListener<Event>
 					}
 					fAnswerList.setVisible(true);
 				}
-				else if (dt == DisplayType.List)
+				else if (DisplayType.isList(dt))
 				{
 					ValueNamePair[] values = MRefList.getList(Env.getCtx(), m_column.getAD_Reference_Value_ID(), false);
 					for(int i = 0; i < values.length; i++)
@@ -680,7 +680,7 @@ public class WWFActivity extends ADForm implements EventListener<Event>
 				//	Do we have an answer?
 				int dt = m_column.getAD_Reference_ID();
 				String value = fAnswerText.getText();
-				if (dt == DisplayType.YesNo || dt == DisplayType.List)
+				if (dt == DisplayType.YesNo || DisplayType.isList(dt))
 				{
 					ListItem li = fAnswerList.getSelectedItem();
 					if(li != null) value = li.getValue().toString();
diff --git a/org.compiere.db.oracle.provider/src/org/compiere/db/DB_Oracle.java b/org.compiere.db.oracle.provider/src/org/compiere/db/DB_Oracle.java
index ea79e032fa..0680cb1ab3 100644
--- a/org.compiere.db.oracle.provider/src/org/compiere/db/DB_Oracle.java
+++ b/org.compiere.db.oracle.provider/src/org/compiere/db/DB_Oracle.java
@@ -1412,7 +1412,7 @@ public class DB_Oracle implements AdempiereDatabase
 				&& ( ! (DisplayType.isID(column.getAD_Reference_ID()) && defaultValue.equals("-1") ) ) )  // not for ID's with default -1
 		{
 			if (DisplayType.isText(column.getAD_Reference_ID()) 
-					|| column.getAD_Reference_ID() == DisplayType.List
+					|| DisplayType.isList(column.getAD_Reference_ID())
 					|| column.getAD_Reference_ID() == DisplayType.YesNo
 					// Two special columns: Defined as Table but DB Type is String 
 					|| column.getColumnName().equals("EntityType") || column.getColumnName().equals("AD_Language")
@@ -1485,7 +1485,7 @@ public class DB_Oracle implements AdempiereDatabase
 			&& ( ! (DisplayType.isID(column.getAD_Reference_ID()) && defaultValue.equals("-1") ) ) )  // not for ID's with default -1
 		{
 			if (DisplayType.isText(column.getAD_Reference_ID()) 
-				|| column.getAD_Reference_ID() == DisplayType.List
+				|| DisplayType.isList(column.getAD_Reference_ID())
 				|| column.getAD_Reference_ID() == DisplayType.YesNo
 				|| column.getAD_Reference_ID() == DisplayType.Payment
 				// Two special columns: Defined as Table but DB Type is String 
diff --git a/org.compiere.db.postgresql.provider/src/org/compiere/db/DB_PostgreSQL.java b/org.compiere.db.postgresql.provider/src/org/compiere/db/DB_PostgreSQL.java
index f0d8dfc6c9..fa58d1a0b2 100755
--- a/org.compiere.db.postgresql.provider/src/org/compiere/db/DB_PostgreSQL.java
+++ b/org.compiere.db.postgresql.provider/src/org/compiere/db/DB_PostgreSQL.java
@@ -1313,7 +1313,7 @@ public class DB_PostgreSQL implements AdempiereDatabase
 				&& ( ! (DisplayType.isID(column.getAD_Reference_ID()) && defaultValue.equals("-1") ) ) )  // not for ID's with default -1
 		{
 			if (DisplayType.isText(column.getAD_Reference_ID()) 
-					|| column.getAD_Reference_ID() == DisplayType.List
+					|| DisplayType.isList(column.getAD_Reference_ID())
 					|| column.getAD_Reference_ID() == DisplayType.YesNo
 					// Two special columns: Defined as Table but DB Type is String 
 					|| column.getColumnName().equals("EntityType") || column.getColumnName().equals("AD_Language")
diff --git a/org.idempiere.test/src/org/idempiere/test/performance/FakeDisplayTypeFactory.java b/org.idempiere.test/src/org/idempiere/test/performance/FakeDisplayTypeFactory.java
index 06d3d6ba4e..c7c5b0da4f 100644
--- a/org.idempiere.test/src/org/idempiere/test/performance/FakeDisplayTypeFactory.java
+++ b/org.idempiere.test/src/org/idempiere/test/performance/FakeDisplayTypeFactory.java
@@ -39,6 +39,11 @@ public class FakeDisplayTypeFactory implements IDisplayTypeFactory {
 	public boolean isDate(int displayType) {
 		return false;
 	}
+	
+	@Override
+	public boolean isList(int displayType) {
+		return false;
+	}
 
 	@Override
 	public boolean isLookup(int displayType) {
diff --git a/org.idempiere.webservices/WEB-INF/src/org/idempiere/adinterface/ModelADServiceImpl.java b/org.idempiere.webservices/WEB-INF/src/org/idempiere/adinterface/ModelADServiceImpl.java
index 920aea86eb..cf587196fe 100644
--- a/org.idempiere.webservices/WEB-INF/src/org/idempiere/adinterface/ModelADServiceImpl.java
+++ b/org.idempiere.webservices/WEB-INF/src/org/idempiere/adinterface/ModelADServiceImpl.java
@@ -1095,7 +1095,7 @@ public class ModelADServiceImpl extends AbstractService implements ModelADServic
 				AD_Reference_ID = ((MLookup)lookup).getDisplayType();
 			}
 			
-			if(AD_Reference_ID==DisplayType.List)
+			if(DisplayType.isList(AD_Reference_ID))
 			{
 				if (lookup.getSize() == 0)
 					lookup.refresh();
diff --git a/org.idempiere.webservices/WEB-INF/src/org/idempiere/adinterface/Process.java b/org.idempiere.webservices/WEB-INF/src/org/idempiere/adinterface/Process.java
index 052a60cdf8..d0e7ab4f6c 100644
--- a/org.idempiere.webservices/WEB-INF/src/org/idempiere/adinterface/Process.java
+++ b/org.idempiere.webservices/WEB-INF/src/org/idempiere/adinterface/Process.java
@@ -543,7 +543,7 @@ public class Process {
 			Object value = valueString;
 			if (valueString != null && valueString.length() == 0)
 				value = null;
-			if (value != null && (DisplayType.List == displayType ||
+			if (value != null && (DisplayType.isList(displayType) ||
 					DisplayType.TableDir== displayType ||
 					DisplayType.Table== displayType)&& value.equals("-1"))
 				value= null;