diff --git a/definitions/grib2/marsLevtypeConcept.def b/definitions/grib2/marsLevtypeConcept.def
new file mode 100644
index 000000000..2d431259f
--- /dev/null
+++ b/definitions/grib2/marsLevtypeConcept.def
@@ -0,0 +1,43 @@
+# Concept marsLevtype 
+'sfc'                 = {typeOfFirstFixedSurface=1; typeOfSecondFixedSurface=255;}
+'sfc'                 = {typeOfFirstFixedSurface=1; typeOfSecondFixedSurface=8;}
+'o2d'                 = {typeOfFirstFixedSurface=1; typeOfSecondFixedSurface=9;}
+'sfc'              = {typeOfFirstFixedSurface=7; typeOfSecondFixedSurface=255;}
+'sfc'              = {typeOfFirstFixedSurface=8; typeOfSecondFixedSurface=255;}
+'sfc'      = {typeOfFirstFixedSurface=17; typeOfSecondFixedSurface=255;}
+'sfc'        = {typeOfFirstFixedSurface=18; typeOfSecondFixedSurface=255;}
+'o2d'           = {typeOfFirstFixedSurface=20; scaleFactorOfFirstFixedSurface=-2; scaledValueOfFirstFixedSurface=29315; typeOfSecondFixedSurface=255;}
+'o2d'           = {typeOfFirstFixedSurface=20; typeOfSecondFixedSurface=255;}
+'pl'            = {typeOfFirstFixedSurface=100; typeOfSecondFixedSurface=255;}
+'sfc'                 = {typeOfFirstFixedSurface=101; typeOfSecondFixedSurface=255;}
+'sfc'           = {typeOfFirstFixedSurface=102; typeOfSecondFixedSurface=255;}
+'sfc'       = {typeOfFirstFixedSurface=103; typeOfSecondFixedSurface=255;}
+'ml'      = {typeOfFirstFixedSurface=105; typeOfSecondFixedSurface=255;}
+'sfc'          = {typeOfFirstFixedSurface=106; typeOfSecondFixedSurface=255;}
+'sfc'          = {typeOfFirstFixedSurface=106;typeOfSecondFixedSurface=106;}
+'pt'                   = {typeOfFirstFixedSurface=107; typeOfSecondFixedSurface=255;}
+'pv'      = {typeOfFirstFixedSurface=109; typeOfSecondFixedSurface=255;}
+'sol'                          = {typeOfFirstFixedSurface=114; typeOfSecondFixedSurface=255;}
+'hhl'                          = {typeOfFirstFixedSurface=118; typeOfSecondFixedSurface=255;}
+'hpl'  = {typeOfFirstFixedSurface=119; typeOfSecondFixedSurface=255;}
+'sol'                    = {typeOfFirstFixedSurface=151; typeOfSecondFixedSurface=255;}
+'sol'               = {typeOfFirstFixedSurface=151; typeOfSecondFixedSurface=151;}
+'sol'                       = {typeOfFirstFixedSurface=152; typeOfSecondFixedSurface=255;}
+'sol'                  = {typeOfFirstFixedSurface=152; typeOfSecondFixedSurface=152;}
+'o2d'           = {typeOfFirstFixedSurface=160; typeOfSecondFixedSurface=255;}
+'o2d'            = {typeOfFirstFixedSurface=160; scaleFactorOfFirstFixedSurface=0; scaledValueOfFirstFixedSurface=0; typeOfSecondFixedSurface=255;}
+'o2d'              = {typeOfFirstFixedSurface=160; typeOfSecondFixedSurface=160;}
+'o2d'             = {typeOfFirstFixedSurface=160; typeOfSecondFixedSurface=9;}
+'sfc'  = {typeOfFirstFixedSurface=162; typeOfSecondFixedSurface=255;}
+'sfc'  = {typeOfFirstFixedSurface=166; typeOfSecondFixedSurface=255;}
+'o3d'              = {typeOfFirstFixedSurface=168; typeOfSecondFixedSurface=255;}
+'o3d'              = {typeOfFirstFixedSurface=168; typeOfSecondFixedSurface=168;}
+'o2d'         = {typeOfFirstFixedSurface=169; typeOfSecondFixedSurface=255;}
+'o2d' = {typeOfFirstFixedSurface=170; typeOfSecondFixedSurface=255;}
+'o2d' = {typeOfFirstFixedSurface=171; typeOfSecondFixedSurface=255;}
+'o2d'               = {typeOfFirstFixedSurface=174; typeOfSecondFixedSurface=255;}
+'o2d'      = {typeOfFirstFixedSurface=175; typeOfSecondFixedSurface=255;}
+'o2d'            = {typeOfFirstFixedSurface=176; typeOfSecondFixedSurface=255;}
+'o2d'                  = {typeOfFirstFixedSurface=174; typeOfSecondFixedSurface=176;}
+'o2d'         = {typeOfFirstFixedSurface=175; typeOfSecondFixedSurface=176;}
+'sfc'  = {typeOfFirstFixedSurface=177; typeOfSecondFixedSurface=255;}
diff --git a/definitions/grib2/template.4.horizontal.def b/definitions/grib2/template.4.horizontal.def
index 071ae07b0..771e6847d 100755
--- a/definitions/grib2/template.4.horizontal.def
+++ b/definitions/grib2/template.4.horizontal.def
@@ -74,7 +74,8 @@ if (extraDim) {
             alias mars.levelist = level;
         }
     }
-    alias mars.levtype  = typeOfFirstFixedSurface;
+    #alias mars.levtype  = typeOfFirstFixedSurface;
+    concept mars.levtype (unknown,"marsLevtypeConcept.def",conceptsDir2,conceptsDir1):no_copy;
     # GRIB-372: levelist alias does not pertain to surface parameters
     if (levtype is "sfc") {
         unalias mars.levelist;
diff --git a/tests/grib_indexing.sh b/tests/grib_indexing.sh
index 86abd7708..0dcd3e879 100755
--- a/tests/grib_indexing.sh
+++ b/tests/grib_indexing.sh
@@ -94,8 +94,8 @@ diff $tempRef $tempOut
 ${tools_dir}/grib_index_build -N -k mars.levtype -o $tempIndex ${data_dir}/tigge_cf_ecmwf.grib2 |\
    grep -q "mars.levtype = { sfc, pl, pv, pt }"
 
-${tools_dir}/grib_index_build -N -k mars.levtype:i -o $tempIndex ${data_dir}/tigge_cf_ecmwf.grib2 |\
-   grep -q "mars.levtype = { 103, 1, 106, 100, 101, 8, 109, 107 }"
+#${tools_dir}/grib_index_build -N -k mars.levtype:i -o $tempIndex ${data_dir}/tigge_cf_ecmwf.grib2 |\
+#   grep -q "mars.levtype = { 103, 1, 106, 100, 101, 8, 109, 107 }"
 
 echo "grib_compare with index files..."
 # ------------------------------------
diff --git a/tests/grib_set.sh b/tests/grib_set.sh
index 325d4168e..4930214f5 100755
--- a/tests/grib_set.sh
+++ b/tests/grib_set.sh
@@ -25,8 +25,8 @@ levtype=`${tools_dir}/grib_get -p levtype $outfile`
 centre=`${tools_dir}/grib_get -p centre $outfile`
 [ $centre = "cnmc" ]
 
-levtype=`${tools_dir}/grib_get -p levtype:l $outfile`
-[ $levtype -eq 100 ]
+#levtype=`${tools_dir}/grib_get -p levtype:l $outfile`
+#[ $levtype -eq 100 ]
 
 centre=`${tools_dir}/grib_get -p centre:l $outfile`
 [ $centre -eq 80 ]
@@ -38,7 +38,7 @@ outfile=${data_dir}/set.grib2
 
 rm -f $outfile
 
-${tools_dir}/grib_set -v -p levtype:l,centre:s  -s levtype:l=100,centre:s=cnmc $infile $outfile >$REDIRECT
+${tools_dir}/grib_set -v -p levtype:l,centre:s  -s levtype=pl,centre:s=cnmc $infile $outfile >$REDIRECT
 
 levtype=`${tools_dir}/grib_get -p levtype $outfile`
 [ $levtype = "pl" ]
@@ -46,8 +46,8 @@ levtype=`${tools_dir}/grib_get -p levtype $outfile`
 centre=`${tools_dir}/grib_get -p centre $outfile`
 [ $centre = "cnmc" ]
 
-levtype=`${tools_dir}/grib_get -p levtype:l $outfile`
-[ $levtype -eq 100 ]
+#levtype=`${tools_dir}/grib_get -p levtype:l $outfile`
+#[ $levtype -eq 100 ]
 
 centre=`${tools_dir}/grib_get -p centre:l $outfile`
 [ $centre -eq 80 ]