diff --git a/definitions/grib2/section.1.def b/definitions/grib2/section.1.def
index b19eb67f8..aadff9912 100644
--- a/definitions/grib2/section.1.def
+++ b/definitions/grib2/section.1.def
@@ -29,11 +29,6 @@ transient masterDir="grib2/tables/[tablesVersion]";
 if (tablesVersion > tablesVersionLatest) {
   transient masterDir="grib2/tables/[tablesVersionLatest]";
 }
-when (tablesVersion!=255) {
-  set masterDir="grib2/tables/[tablesVersion]";
-} else {
-  set masterDir="grib2/tables/4";
-}
 
 codetable[1] localTablesVersion 'grib2/tables/local/[centreForLocal]/1.1.table' ;
 alias versionNumberOfGribLocalTables=localTablesVersion;
diff --git a/definitions/grib2/tables/0/1.0.table b/definitions/grib2/tables/0/1.0.table
index 3c5223d3b..2190905a4 100644
--- a/definitions/grib2/tables/0/1.0.table
+++ b/definitions/grib2/tables/0/1.0.table
@@ -2,4 +2,4 @@
 1 1 Initial operational version number
 2 2 Previous operational version number
 3 3 Current operational version number implemented on 2 November 2005
-255 255 Master tables not used. Local table entries and local templates may use the entire range of the table, not just those sections marked Reserved for local used.
+255 255 Missing
diff --git a/definitions/grib2/tables/1.0.table b/definitions/grib2/tables/1.0.table
index 1038dc72d..a9a0a11c0 100644
--- a/definitions/grib2/tables/1.0.table
+++ b/definitions/grib2/tables/1.0.table
@@ -36,4 +36,4 @@
 34 34 Version implemented on 18 November 2024
 35 35 Pre-operational to be implemented by next amendment
 # 36-254 Future versions
-255 255 Master tables not used. Local table entries and local templates may use the entire range of the table, not just those sections marked Reserved for local used.
+255 255 Missing
diff --git a/definitions/grib2/tables/1/1.0.table b/definitions/grib2/tables/1/1.0.table
index 3c5223d3b..2190905a4 100644
--- a/definitions/grib2/tables/1/1.0.table
+++ b/definitions/grib2/tables/1/1.0.table
@@ -2,4 +2,4 @@
 1 1 Initial operational version number
 2 2 Previous operational version number
 3 3 Current operational version number implemented on 2 November 2005
-255 255 Master tables not used. Local table entries and local templates may use the entire range of the table, not just those sections marked Reserved for local used.
+255 255 Missing
diff --git a/definitions/grib2/tables/10/1.0.table b/definitions/grib2/tables/10/1.0.table
index babcdd77d..7e37d0ffc 100644
--- a/definitions/grib2/tables/10/1.0.table
+++ b/definitions/grib2/tables/10/1.0.table
@@ -12,4 +12,4 @@
 10 10 Version implemented on 7 November 2012
 11 11 Pre-operational to be implemented by next amendment
 # 12-254 Future versions
-255 255 Master tables not used. Local table entries and local templates may use the entire range of the table, not just those sections marked Reserved for local used.
+255 255 Missing
diff --git a/definitions/grib2/tables/11/1.0.table b/definitions/grib2/tables/11/1.0.table
index babcdd77d..7e37d0ffc 100644
--- a/definitions/grib2/tables/11/1.0.table
+++ b/definitions/grib2/tables/11/1.0.table
@@ -12,4 +12,4 @@
 10 10 Version implemented on 7 November 2012
 11 11 Pre-operational to be implemented by next amendment
 # 12-254 Future versions
-255 255 Master tables not used. Local table entries and local templates may use the entire range of the table, not just those sections marked Reserved for local used.
+255 255 Missing
diff --git a/definitions/grib2/tables/18/1.0.table b/definitions/grib2/tables/18/1.0.table
index 0e6f26f8e..179f944e4 100644
--- a/definitions/grib2/tables/18/1.0.table
+++ b/definitions/grib2/tables/18/1.0.table
@@ -20,4 +20,4 @@
 18 18 Version implemented on 2 November 2016
 19 19 Pre-operational to be implemented by next amendment
 # 20-254 Future versions
-255 255 Master tables not used. Local table entries and local templates may use the entire range of the table, not just those sections marked Reserved for local used.
+255 255 Missing
diff --git a/definitions/grib2/tables/19/1.0.table b/definitions/grib2/tables/19/1.0.table
index 06710c183..869de989e 100644
--- a/definitions/grib2/tables/19/1.0.table
+++ b/definitions/grib2/tables/19/1.0.table
@@ -21,4 +21,4 @@
 19 19 Version implemented on 3 May 2017
 20 20 Pre-operational to be implemented by next amendment
 # 21-254 Future versions
-255 255 Master tables not used. Local table entries and local templates may use the entire range of the table, not just those sections marked Reserved for local used.
+255 255 Missing
diff --git a/definitions/grib2/tables/2/1.0.table b/definitions/grib2/tables/2/1.0.table
index a34f44ee1..b40e40dfc 100644
--- a/definitions/grib2/tables/2/1.0.table
+++ b/definitions/grib2/tables/2/1.0.table
@@ -4,4 +4,4 @@
 2 2 Previous operational version number
 3 3 Current operational version number implemented on 2 November 2005
 # 4-254 Future operational version numbers
-255 255 Master tables not used. Local table entries and local templates may use the entire range of the table, not just those sections marked Reserved for local used.
+255 255 Missing
diff --git a/definitions/grib2/tables/20/1.0.table b/definitions/grib2/tables/20/1.0.table
index 60530c280..604a3f048 100644
--- a/definitions/grib2/tables/20/1.0.table
+++ b/definitions/grib2/tables/20/1.0.table
@@ -22,4 +22,4 @@
 20 20 Version implemented on 8 November 2017
 21 21 Pre-operational to be implemented by next amendment
 # 22-254 Future versions
-255 255 Master tables not used. Local table entries and local templates may use the entire range of the table, not just those sections marked Reserved for local used.
+255 255 Missing
diff --git a/definitions/grib2/tables/21/1.0.table b/definitions/grib2/tables/21/1.0.table
index 1a7c7870f..77dcd386d 100644
--- a/definitions/grib2/tables/21/1.0.table
+++ b/definitions/grib2/tables/21/1.0.table
@@ -23,4 +23,4 @@
 21 21 Version implemented on 2 May 2018
 22 22 Pre-operational to be implemented by next amendment
 # 23-254 Future versions
-255 255 Master tables not used. Local table entries and local templates may use the entire range of the table, not just those sections marked Reserved for local used.
+255 255 Missing
diff --git a/definitions/grib2/tables/22/1.0.table b/definitions/grib2/tables/22/1.0.table
index d65b24f9e..5dda64d11 100644
--- a/definitions/grib2/tables/22/1.0.table
+++ b/definitions/grib2/tables/22/1.0.table
@@ -24,4 +24,4 @@
 22 22 Version implemented on 7 November 2018
 23 23 Version implemented on 15 May 2019
 # 24-254 Future versions
-255 255 Master tables not used. Local table entries and local templates may use the entire range of the table, not just those sections marked Reserved for local used.
+255 255 Missing
diff --git a/definitions/grib2/tables/23/1.0.table b/definitions/grib2/tables/23/1.0.table
index d65b24f9e..5dda64d11 100644
--- a/definitions/grib2/tables/23/1.0.table
+++ b/definitions/grib2/tables/23/1.0.table
@@ -24,4 +24,4 @@
 22 22 Version implemented on 7 November 2018
 23 23 Version implemented on 15 May 2019
 # 24-254 Future versions
-255 255 Master tables not used. Local table entries and local templates may use the entire range of the table, not just those sections marked Reserved for local used.
+255 255 Missing
diff --git a/definitions/grib2/tables/24/1.0.table b/definitions/grib2/tables/24/1.0.table
index d577b64fc..ee039010e 100644
--- a/definitions/grib2/tables/24/1.0.table
+++ b/definitions/grib2/tables/24/1.0.table
@@ -25,4 +25,4 @@
 23 23 Version implemented on 15 May 2019
 24 24 Version implemented on 6 November 2019
 # 25-254 Future versions
-255 255 Master tables not used. Local table entries and local templates may use the entire range of the table, not just those sections marked Reserved for local used.
+255 255 Missing
diff --git a/definitions/grib2/tables/25/1.0.table b/definitions/grib2/tables/25/1.0.table
index 294d163eb..a4638c462 100644
--- a/definitions/grib2/tables/25/1.0.table
+++ b/definitions/grib2/tables/25/1.0.table
@@ -26,4 +26,4 @@
 24 24 Version implemented on 6 November 2019
 25 25 Version implemented on 6 May 2020
 # 26-254 Future versions
-255 255 Master tables not used. Local table entries and local templates may use the entire range of the table, not just those sections marked Reserved for local used.
+255 255 Missing
diff --git a/definitions/grib2/tables/26/1.0.table b/definitions/grib2/tables/26/1.0.table
index 789ef85f7..3aad23690 100644
--- a/definitions/grib2/tables/26/1.0.table
+++ b/definitions/grib2/tables/26/1.0.table
@@ -27,4 +27,4 @@
 25 25 Version implemented on 6 May 2020
 26 26 Version implemented on 16 November 2020
 # 27-254 Future versions
-255 255 Master tables not used. Local table entries and local templates may use the entire range of the table, not just those sections marked Reserved for local used.
+255 255 Missing
diff --git a/definitions/grib2/tables/27/1.0.table b/definitions/grib2/tables/27/1.0.table
index 3dd474a1f..bbcf84da9 100644
--- a/definitions/grib2/tables/27/1.0.table
+++ b/definitions/grib2/tables/27/1.0.table
@@ -29,4 +29,4 @@
 27 27 Version implemented on 15 June 2021
 28 28 Pre-operational to be implemented by next amendment
 # 29-254 Future versions
-255 255 Master tables not used. Local table entries and local templates may use the entire range of the table, not just those sections marked Reserved for local used.
+255 255 Missing
diff --git a/definitions/grib2/tables/28/1.0.table b/definitions/grib2/tables/28/1.0.table
index 7f683b60d..e746934bb 100644
--- a/definitions/grib2/tables/28/1.0.table
+++ b/definitions/grib2/tables/28/1.0.table
@@ -30,4 +30,4 @@
 28 28 Version implemented on 15 November 2021
 29 29 Pre-operational to be implemented by next amendment
 # 30-254 Future versions
-255 255 Master tables not used. Local table entries and local templates may use the entire range of the table, not just those sections marked Reserved for local used.
+255 255 Missing
diff --git a/definitions/grib2/tables/3/1.0.table b/definitions/grib2/tables/3/1.0.table
index a34f44ee1..b40e40dfc 100644
--- a/definitions/grib2/tables/3/1.0.table
+++ b/definitions/grib2/tables/3/1.0.table
@@ -4,4 +4,4 @@
 2 2 Previous operational version number
 3 3 Current operational version number implemented on 2 November 2005
 # 4-254 Future operational version numbers
-255 255 Master tables not used. Local table entries and local templates may use the entire range of the table, not just those sections marked Reserved for local used.
+255 255 Missing
diff --git a/definitions/grib2/tables/4/1.0.table b/definitions/grib2/tables/4/1.0.table
index a34f44ee1..b40e40dfc 100644
--- a/definitions/grib2/tables/4/1.0.table
+++ b/definitions/grib2/tables/4/1.0.table
@@ -4,4 +4,4 @@
 2 2 Previous operational version number
 3 3 Current operational version number implemented on 2 November 2005
 # 4-254 Future operational version numbers
-255 255 Master tables not used. Local table entries and local templates may use the entire range of the table, not just those sections marked Reserved for local used.
+255 255 Missing
diff --git a/definitions/grib2/tables/5/1.0.table b/definitions/grib2/tables/5/1.0.table
index e1a71a030..a64c3dd04 100644
--- a/definitions/grib2/tables/5/1.0.table
+++ b/definitions/grib2/tables/5/1.0.table
@@ -7,4 +7,4 @@
 5 5 Version implemented on 4 November 2009
 6 6 Pre-operational to be implemented by next amendment
 # 7-254 Future versions
-255 255 Master tables not used. Local table entries and local templates may use the entire range of the table, not just those sections marked Reserved for local used.
+255 255 Missing
diff --git a/definitions/grib2/tables/6/1.0.table b/definitions/grib2/tables/6/1.0.table
index 54a50efa2..6bd065e12 100644
--- a/definitions/grib2/tables/6/1.0.table
+++ b/definitions/grib2/tables/6/1.0.table
@@ -8,5 +8,5 @@
 6 6 Version implemented on 15 September 2010
 7 7 Pre-operational to be implemented by next amendment
 # 8-254 Future versions
-255 255 Master tables not used. Local table entries and local templates may use the entire range of the table, not just those sections marked Reserved for local used.
+255 255 Missing
 
diff --git a/definitions/grib2/tables/7/1.0.table b/definitions/grib2/tables/7/1.0.table
index 7ccb0e2a9..279292002 100644
--- a/definitions/grib2/tables/7/1.0.table
+++ b/definitions/grib2/tables/7/1.0.table
@@ -9,4 +9,4 @@
 7 7 Version implemented on 4 May 2011
 8 8 Pre-operational to be implemented by next amendment
 # 9-254 Future versions
-255 255 Master tables not used. Local table entries and local templates may use the entire range of the table, not just those sections marked Reserved for local used.
+255 255 Missing
diff --git a/definitions/grib2/tables/8/1.0.table b/definitions/grib2/tables/8/1.0.table
index 9f43a852b..a3e9034b7 100644
--- a/definitions/grib2/tables/8/1.0.table
+++ b/definitions/grib2/tables/8/1.0.table
@@ -10,4 +10,4 @@
 8 8 Version implemented on 2 November 2011
 9 9 Pre-operational to be implemented by next amendment
 # 10-254 Future versions
-255 255 Master tables not used. Local table entries and local templates may use the entire range of the table, not just those sections marked Reserved for local used.
+255 255 Missing
diff --git a/definitions/grib2/tables/9/1.0.table b/definitions/grib2/tables/9/1.0.table
index 4b1406c7e..5dc717176 100644
--- a/definitions/grib2/tables/9/1.0.table
+++ b/definitions/grib2/tables/9/1.0.table
@@ -11,4 +11,4 @@
 9 9 Version implemented on 2 May 2012
 10 10 Pre-operational to be implemented by next amendment
 # 11-254 Future versions
-255 255 Master tables not used. Local table entries and local templates may use the entire range of the table, not just those sections marked Reserved for local used.
+255 255 Missing
diff --git a/definitions/grib3/tables/0/1.0.table b/definitions/grib3/tables/0/1.0.table
index a34f44ee1..b40e40dfc 100644
--- a/definitions/grib3/tables/0/1.0.table
+++ b/definitions/grib3/tables/0/1.0.table
@@ -4,4 +4,4 @@
 2 2 Previous operational version number
 3 3 Current operational version number implemented on 2 November 2005
 # 4-254 Future operational version numbers
-255 255 Master tables not used. Local table entries and local templates may use the entire range of the table, not just those sections marked Reserved for local used.
+255 255 Missing