diff --git a/definitions/grib2/products_11.def b/definitions/grib2/products_11.def
index 6084a0b37..bad30182a 100644
--- a/definitions/grib2/products_11.def
+++ b/definitions/grib2/products_11.def
@@ -1,5 +1,7 @@
 # (C) Copyright 2005- ECMWF.
 
-# Copernicus regional reanalysis (CARRA/CERRA)
-constant marsExpver = 'test';
+# Copernicus regional reanalysis test (CARRA/CERRA)
+if (!defined(marsExpver)) {
+  constant marsExpver = 'test';
+}
 include "grib2/products_crra.def"
diff --git a/tests/grib_uerra.sh b/tests/grib_uerra.sh
index cdd7beb87..15f9523e6 100755
--- a/tests/grib_uerra.sh
+++ b/tests/grib_uerra.sh
@@ -85,11 +85,18 @@ status=$?
 set -e
 [ $status -ne 0 ]
 
-# crraLocalVersion=2 has a coded key which can be set
+# ECC-1532
+# crraLocalVersion=2 has a coded key for experimentVersionNumber
 ${tools_dir}/grib_set -s \
   productionStatusOfProcessedData=10,grib2LocalSectionPresent=1,crraLocalVersion=2,marsExpver=coco \
 $grib2_sample $temp1
 grib_check_key_equals $temp1 'marsExpver,mars.expver' 'coco coco'
 
+${tools_dir}/grib_set -s \
+  productionStatusOfProcessedData=11,grib2LocalSectionPresent=1,crraLocalVersion=2,experimentVersionNumber=0078 \
+$grib2_sample $temp1
+grib_check_key_equals $temp1 'marsExpver,mars.expver' '0078 0078'
+
+
 # Clean up
 rm -f $temp1 $temp2 $tempSample