diff --git a/base/src/org/compiere/model/GridField.java b/base/src/org/compiere/model/GridField.java
index 87cacfcaac..edf911029d 100644
--- a/base/src/org/compiere/model/GridField.java
+++ b/base/src/org/compiere/model/GridField.java
@@ -338,7 +338,7 @@ public class GridField
 		}
 
 		//	Field is the Link Column of the tab
-		if (m_vo.ColumnName.equals(Env.getContext(m_vo.ctx, m_vo.WindowNo, m_vo.TabNo, "LinkColumnName")))
+		if (m_vo.ColumnName.equals(Env.getContext(m_vo.ctx, m_vo.WindowNo, m_vo.TabNo, GridTab.CTX_LinkColumnName)))
 		{
 			log.finest(m_vo.ColumnName + " NO - LinkColumn");
 			return false;
@@ -349,7 +349,7 @@ public class GridField
 		{
 			int AD_Client_ID = Env.getContextAsInt(m_vo.ctx, m_vo.WindowNo, m_vo.TabNo, "AD_Client_ID");
 			int AD_Org_ID = Env.getContextAsInt(m_vo.ctx, m_vo.WindowNo, m_vo.TabNo, "AD_Org_ID");
-			String keyColumn = Env.getContext(m_vo.ctx, m_vo.WindowNo, m_vo.TabNo, "KeyColumnName");
+			String keyColumn = Env.getContext(m_vo.ctx, m_vo.WindowNo, m_vo.TabNo, GridTab.CTX_KeyColumnName);
 			if ("EntityType".equals(keyColumn))
 				keyColumn = "AD_EntityType_ID";
 			if (!keyColumn.endsWith("_ID"))
@@ -450,14 +450,14 @@ public class GridField
 		}
 		
 		//	Set Client & Org to System, if System access
-		if (X_AD_Table.ACCESSLEVEL_SystemOnly.equals(Env.getContext(m_vo.ctx, m_vo.WindowNo, m_vo.TabNo, "AccessLevel"))
+		if (X_AD_Table.ACCESSLEVEL_SystemOnly.equals(Env.getContext(m_vo.ctx, m_vo.WindowNo, m_vo.TabNo, GridTab.CTX_AccessLevel))
 			&& (m_vo.ColumnName.equals("AD_Client_ID") || m_vo.ColumnName.equals("AD_Org_ID")))
 		{
 			log.fine("[SystemAccess] " + m_vo.ColumnName + "=0");
 			return new Integer(0);
 		}
 		//	Set Org to System, if Client access
-		else if (X_AD_Table.ACCESSLEVEL_SystemPlusClient.equals(Env.getContext(m_vo.ctx, m_vo.WindowNo, m_vo.TabNo, "AccessLevel"))
+		else if (X_AD_Table.ACCESSLEVEL_SystemPlusClient.equals(Env.getContext(m_vo.ctx, m_vo.WindowNo, m_vo.TabNo, GridTab.CTX_AccessLevel))
 			&& m_vo.ColumnName.equals("AD_Org_ID"))
 		{
 			log.fine("[ClientAccess] " + m_vo.ColumnName + "=0");
@@ -1081,7 +1081,7 @@ public class GridField
 			m_parentValue = Boolean.FALSE;
 		else 
 		{
-			String LinkColumnName = Env.getContext(m_vo.ctx, m_vo.WindowNo, m_vo.TabNo, "LinkColumnName");
+			String LinkColumnName = Env.getContext(m_vo.ctx, m_vo.WindowNo, m_vo.TabNo, GridTab.CTX_LinkColumnName);
 			if (LinkColumnName == null || LinkColumnName.length() == 0)
 				m_parentValue = Boolean.FALSE; // teo_sarca, [ 1673886 ]
 			else 
@@ -1559,16 +1559,16 @@ public class GridField
 	{
 		boolean result = false;
 		int tabNo = m_vo.TabNo;
-		int currentLevel = Env.getContextAsInt(m_vo.ctx, m_vo.WindowNo, tabNo, "TabLevel");
+		int currentLevel = Env.getContextAsInt(m_vo.ctx, m_vo.WindowNo, tabNo, GridTab.CTX_TabLevel);
 		if (tabNo > 1 && currentLevel > 1)
 		{
 			while ( tabNo >= 1 && !result)
 			{
 				tabNo--;
-				int level = Env.getContextAsInt(m_vo.ctx, m_vo.WindowNo, tabNo, "TabLevel");
+				int level = Env.getContextAsInt(m_vo.ctx, m_vo.WindowNo, tabNo, GridTab.CTX_TabLevel);
 				if (level > 0 && level < currentLevel) 
 				{
-					String linkColumn = Env.getContext(m_vo.ctx, m_vo.WindowNo, tabNo, "LinkColumnName");
+					String linkColumn = Env.getContext(m_vo.ctx, m_vo.WindowNo, tabNo, GridTab.CTX_LinkColumnName);
 					if (m_vo.ColumnName.equals(linkColumn))
 					{
 						result = true;
diff --git a/base/src/org/compiere/model/GridTab.java b/base/src/org/compiere/model/GridTab.java
index 5ddbee7907..f9b1210f2c 100644
--- a/base/src/org/compiere/model/GridTab.java
+++ b/base/src/org/compiere/model/GridTab.java
@@ -68,7 +68,8 @@ import org.compiere.util.ValueNamePair;
  *  @author 	Jorg Janke
  *  @version 	$Id: GridTab.java,v 1.10 2006/10/02 05:18:39 jjanke Exp $
  *  
- *  @author Teo Sarca - BF [ 1742159 ]
+ *  @author Teo Sarca, SC ARHIPAC SERVICE SRL
+ *  			<li>BF [ 1742159 ] Editable number field for inactive record
  *  @author Victor Perez , e-Evolution.SC [1877902] Implement JSR 223 Scripting APIs to Callout
  *  @author Carlos Ruiz, qss FR [1877902]
  *  @see  http://sourceforge.net/tracker/?func=detail&atid=879335&aid=1877902&group_id=176962 to FR [1877902]
@@ -144,6 +145,16 @@ public class GridTab implements DataStatusListener, Evaluatee, Serializable
 	protected CLogger	log = CLogger.getCLogger(getClass());
 	
 	private boolean m_parentNeedSave = false;
+	
+	// Context property names:
+	public static final String CTX_KeyColumnName = "KeyColumnName";
+	public static final String CTX_LinkColumnName = "LinkColumnName";
+	public static final String CTX_TabLevel = "TabLevel";
+	public static final String CTX_AccessLevel = "AccessLevel";
+	public static final String CTX_AD_Tab_ID = "AD_Tab_ID";
+	public static final String CTX_Name = "Name";
+	public static final String CTX_AD_Table_ID = "AD_Table_ID";
+	
 
 
 	/**************************************************************************
@@ -298,8 +309,9 @@ public class GridTab implements DataStatusListener, Evaluatee, Serializable
 				   voF.IsReadOnly = true;
 				}*/
 				//	Record Info
-				if (field.isKey())
-					m_keyColumnName = columnName;
+				if (field.isKey()) {
+					setKeyColumnName(columnName);
+				}
 				//	Parent Column(s)
 				if (field.isParentColumn())
 					m_parents.add(columnName);
@@ -1030,6 +1042,15 @@ public class GridTab implements DataStatusListener, Evaluatee, Serializable
 	{
 		return m_keyColumnName;
 	}	//	getKeyColumnName
+	
+	/**
+	 * Set Name of the Key Column
+	 * @param keyColumnName
+	 */
+	private void setKeyColumnName(String keyColumnName) {
+		this.m_keyColumnName = keyColumnName;
+		Env.setContext(m_vo.ctx, m_vo.WindowNo, m_vo.TabNo, CTX_KeyColumnName, m_keyColumnName);
+	}
 
 	/**
 	 *	Return Name of link column
@@ -1076,7 +1097,7 @@ public class GridTab implements DataStatusListener, Evaluatee, Serializable
 				log.fine("AD_Column_ID=" + m_vo.AD_Column_ID + " - " + m_linkColumnName);
 			}
 		}
-		Env.setContext(m_vo.ctx, m_vo.WindowNo, m_vo.TabNo, "LinkColumnName", m_linkColumnName);
+		Env.setContext(m_vo.ctx, m_vo.WindowNo, m_vo.TabNo, CTX_LinkColumnName, m_linkColumnName);
 	}	//	setLinkColumnName
 
 	/**
diff --git a/base/src/org/compiere/model/GridTabVO.java b/base/src/org/compiere/model/GridTabVO.java
index 055d015a56..70cce8dec5 100644
--- a/base/src/org/compiere/model/GridTabVO.java
+++ b/base/src/org/compiere/model/GridTabVO.java
@@ -96,9 +96,9 @@ public class GridTabVO implements Evaluatee, Serializable
 		try
 		{
 			vo.AD_Tab_ID = rs.getInt("AD_Tab_ID");
-			Env.setContext(vo.ctx, vo.WindowNo, vo.TabNo, "AD_Tab_ID", String.valueOf(vo.AD_Tab_ID));
+			Env.setContext(vo.ctx, vo.WindowNo, vo.TabNo, GridTab.CTX_AD_Tab_ID, String.valueOf(vo.AD_Tab_ID));
 			vo.Name = rs.getString("Name");
-			Env.setContext(vo.ctx, vo.WindowNo, vo.TabNo, "Name", vo.Name);
+			Env.setContext(vo.ctx, vo.WindowNo, vo.TabNo, GridTab.CTX_Name, vo.Name);
 
 			//	Translation Tab	**
 			if (rs.getString("IsTranslationTab").equals("Y"))
@@ -142,11 +142,11 @@ public class GridTabVO implements Evaluatee, Serializable
 				CLogger.get().fine("No Role Access - AD_Tab_ID=" + vo.AD_Tab_ID + " " + vo. Name);
 				return false;
 			}	//	Used by MField.getDefault
-			Env.setContext(vo.ctx, vo.WindowNo, vo.TabNo, "AccessLevel", vo.AccessLevel);
+			Env.setContext(vo.ctx, vo.WindowNo, vo.TabNo, GridTab.CTX_AccessLevel, vo.AccessLevel);
 
 			//	Table Access
 			vo.AD_Table_ID = rs.getInt("AD_Table_ID");
-			Env.setContext(vo.ctx, vo.WindowNo, vo.TabNo, "AD_Table_ID", String.valueOf(vo.AD_Table_ID));
+			Env.setContext(vo.ctx, vo.WindowNo, vo.TabNo, GridTab.CTX_AD_Table_ID, String.valueOf(vo.AD_Table_ID));
 			if (!role.isTableAccess(vo.AD_Table_ID, true))
 			{
 				CLogger.get().config("No Table Access - AD_Tab_ID=" 
@@ -526,11 +526,11 @@ public class GridTabVO implements Evaluatee, Serializable
 		GridTabVO clone = new GridTabVO(Ctx, windowNo);
 		clone.AD_Window_ID = AD_Window_ID;
 		clone.TabNo = TabNo;
-		Env.setContext(Ctx, windowNo, clone.TabNo, "AD_Tab_ID", String.valueOf(clone.AD_Tab_ID));
+		Env.setContext(Ctx, windowNo, clone.TabNo, GridTab.CTX_AD_Tab_ID, String.valueOf(clone.AD_Tab_ID));
 		//
 		clone.AD_Tab_ID = AD_Tab_ID;
 		clone.Name = Name;
-		Env.setContext(Ctx, windowNo, clone.TabNo, "Name", clone.Name);
+		Env.setContext(Ctx, windowNo, clone.TabNo, GridTab.CTX_Name, clone.Name);
 		clone.Description = Description;
 		clone.Help = Help;
 		clone.IsSingleRow = IsSingleRow;
@@ -555,8 +555,8 @@ public class GridTabVO implements Evaluatee, Serializable
 		clone.AD_Image_ID = AD_Image_ID;
 		clone.Included_Tab_ID = Included_Tab_ID;
 		clone.ReplicationType = ReplicationType;
-		Env.setContext(Ctx, windowNo, clone.TabNo, "AccessLevel", clone.AccessLevel);
-		Env.setContext(Ctx, windowNo, clone.TabNo, "AD_Table_ID", String.valueOf(clone.AD_Table_ID));
+		Env.setContext(Ctx, windowNo, clone.TabNo, GridTab.CTX_AccessLevel, clone.AccessLevel);
+		Env.setContext(Ctx, windowNo, clone.TabNo, GridTab.CTX_AD_Table_ID, String.valueOf(clone.AD_Table_ID));
 
 		//
 		clone.IsSortTab = IsSortTab;
diff --git a/base/src/org/compiere/model/GridWindow.java b/base/src/org/compiere/model/GridWindow.java
index fb5ca976fa..db8ca3cae0 100644
--- a/base/src/org/compiere/model/GridWindow.java
+++ b/base/src/org/compiere/model/GridWindow.java
@@ -137,9 +137,6 @@ public class GridWindow implements Serializable
 			if (mTabVO != null)
 			{
 				GridTab mTab = new GridTab(mTabVO);
-				Env.setContext(mTabVO.ctx, mTabVO.WindowNo, mTabVO.TabNo, 
-					"KeyColumnName", mTab.getKeyColumnName());
-				
 				m_tabs.add(mTab);
 			}
 		}	//  for all tabs
diff --git a/client/src/org/compiere/apps/APanel.java b/client/src/org/compiere/apps/APanel.java
index 1197488627..9ae1ab452a 100644
--- a/client/src/org/compiere/apps/APanel.java
+++ b/client/src/org/compiere/apps/APanel.java
@@ -641,7 +641,7 @@ public final class APanel extends CPanel
 					//  MTab
 					if (tab == 0) mWindow.initTab(0);
 					GridTab gTab = mWindow.getTab(tab);
-					Env.setContext(m_ctx, m_curWindowNo, tab, "TabLevel", Integer.toString(gTab.getTabLevel()));
+					Env.setContext(m_ctx, m_curWindowNo, tab, GridTab.CTX_TabLevel, Integer.toString(gTab.getTabLevel()));
 					//  Query first tab
 					if (tab == 0)
 					{