diff --git a/definitions/grib2/tables/26/4.246.table b/definitions/grib2/tables/26/4.246.table
index ab22dbe1e..0ca9c0c98 100644
--- a/definitions/grib2/tables/26/4.246.table
+++ b/definitions/grib2/tables/26/4.246.table
@@ -1,7 +1,7 @@
 # Code table 4.246 - Thunderstorm intensity
-0 0 No thunderstorm occurence 
-1 1 Weak thunderstorm 
-2 2 Moderate thunderstorm 
-3 3 Severe thunderstorm 
-# 4-254 Reserved 
-255 255 Missing 
+0 0 No thunderstorm occurrence
+1 1 Weak thunderstorm
+2 2 Moderate thunderstorm
+3 3 Severe thunderstorm
+# 4-254 Reserved
+255 255 Missing
diff --git a/definitions/grib2/tables/27/4.246.table b/definitions/grib2/tables/27/4.246.table
index ca791939e..0ca9c0c98 100644
--- a/definitions/grib2/tables/27/4.246.table
+++ b/definitions/grib2/tables/27/4.246.table
@@ -1,7 +1,7 @@
 # Code table 4.246 - Thunderstorm intensity
-0 0 No thunderstorm occurence 
-1 1 Weak thunderstorm 
-2 2 Moderate thunderstorm 
-3 3 Severe thunderstorm 
+0 0 No thunderstorm occurrence
+1 1 Weak thunderstorm
+2 2 Moderate thunderstorm
+3 3 Severe thunderstorm
 # 4-254 Reserved
-255 255 Missing 
+255 255 Missing
diff --git a/src/grib_accessor_class_bufr_data_element.c b/src/grib_accessor_class_bufr_data_element.c
index 937ab1192..19d5c646d 100644
--- a/src/grib_accessor_class_bufr_data_element.c
+++ b/src/grib_accessor_class_bufr_data_element.c
@@ -603,7 +603,7 @@ static int get_native_type(grib_accessor* a)
 {
     grib_accessor_bufr_data_element* self = (grib_accessor_bufr_data_element*)a;
     int ret                               = GRIB_TYPE_DOUBLE;
-
+    DebugAssert(self);
     switch (self->type) {
         case BUFR_DESCRIPTOR_TYPE_STRING:
             ret = GRIB_TYPE_STRING;
diff --git a/src/grib_accessor_class_from_scale_factor_scaled_value.c b/src/grib_accessor_class_from_scale_factor_scaled_value.c
index 3b5311e6e..f7121cf06 100644
--- a/src/grib_accessor_class_from_scale_factor_scaled_value.c
+++ b/src/grib_accessor_class_from_scale_factor_scaled_value.c
@@ -189,6 +189,7 @@ static int pack_double(grib_accessor* a, const double* val, size_t* len)
     int64_t value = 0, prev_value = 0;
     double exact        = *val; /*the input*/
     const float epsilon = float_epsilon();
+    int is_negative = 0;
     unsigned long maxval_value, maxval_factor; /*maximum allowable values*/
     grib_accessor *accessor_factor, *accessor_value;
 
@@ -217,9 +218,11 @@ static int pack_double(grib_accessor* a, const double* val, size_t* len)
     maxval_value  = (1UL << (accessor_value->length * 8)) - 2;  /* exclude missing */
     maxval_factor = (1UL << (accessor_factor->length * 8)) - 2; /* exclude missing */
 
-    Assert(exact > 0);
-
     /* Loop until we find a close enough approximation. Keep the last good values */
+    if (exact < 0) {
+        is_negative = 1;
+        exact *= -1;
+    }
     factor = prev_factor = 0;
     value = prev_value = round(exact);
     while (!is_approximately_equal(exact, eval_value_factor(value, factor), epsilon) &&
@@ -236,6 +239,10 @@ static int pack_double(grib_accessor* a, const double* val, size_t* len)
         prev_value  = value;
     }
 
+    if (is_negative) {
+        value *= -1;
+    }
+
     if ((ret = grib_set_long_internal(hand, self->scaleFactor, factor)) != GRIB_SUCCESS)
         return ret;
     if ((ret = grib_set_long_internal(hand, self->scaledValue, value)) != GRIB_SUCCESS)
diff --git a/src/grib_accessor_class_proj_string.c b/src/grib_accessor_class_proj_string.c
index 0dfca41bb..f1ce6fafa 100644
--- a/src/grib_accessor_class_proj_string.c
+++ b/src/grib_accessor_class_proj_string.c
@@ -206,9 +206,17 @@ static int proj_space_view(grib_handle* h, char* result)
 #if 0
     int err        = 0;
     char shape[64] = {0,};
+    double latOfSubSatellitePointInDegrees, lonOfSubSatellitePointInDegrees;
 
     if ((err = get_earth_shape(h, shape)) != GRIB_SUCCESS)
         return err;
+    
+    if ((err = grib_get_double_internal(h, "longitudeOfSubSatellitePointInDegrees", &lonOfSubSatellitePointInDegrees)) != GRIB_SUCCESS)
+        return err;
+
+    sprintf(result, "+proj=geos +lon_0=%lf +h=35785831 +x_0=0 +y_0=0 %s", lonOfSubSatellitePointInDegrees, shape);
+    return err;
+
     /* Experimental: For now do the same as gdalsrsinfo - hard coded values! */
     sprintf(result, "+proj=geos +lon_0=0 +h=35785831 +x_0=0 +y_0=0 %s",  shape);
     return err;
diff --git a/src/grib_iterator_class_space_view.c b/src/grib_iterator_class_space_view.c
index bbfc6d366..90456fc56 100644
--- a/src/grib_iterator_class_space_view.c
+++ b/src/grib_iterator_class_space_view.c
@@ -228,7 +228,7 @@ static int init(grib_iterator* iter, grib_handle* h, grib_arguments* args)
 
     /* Orthographic not supported. This happens when Nr (camera altitude) is missing */
     if (grib_is_missing(h, sNrInRadiusOfEarth, &ret)) {
-        grib_context_log(h->context, GRIB_LOG_ERROR, "Orthographic view (Nr missing) not supported");
+        grib_context_log(h->context, GRIB_LOG_ERROR, "Space View: Orthographic view (Nr missing) not supported");
         return GRIB_NOT_IMPLEMENTED;
     }
     if ((ret = grib_get_double_internal(h, sNrInRadiusOfEarth, &nrInRadiusOfEarth)) != GRIB_SUCCESS)
@@ -256,7 +256,7 @@ static int init(grib_iterator* iter, grib_handle* h, grib_arguments* args)
     }
 
     if (nrInRadiusOfEarth == 0) {
-        grib_context_log(h->context, GRIB_LOG_ERROR, "Key %s must be greater than zero", sNrInRadiusOfEarth);
+        grib_context_log(h->context, GRIB_LOG_ERROR, "Space View: Key %s must be greater than zero", sNrInRadiusOfEarth);
         return GRIB_GEOCALCULUS_PROBLEM;
     }
 
@@ -265,8 +265,12 @@ static int init(grib_iterator* iter, grib_handle* h, grib_arguments* args)
 
     lap = latOfSubSatellitePointInDegrees;
     lop = lonOfSubSatellitePointInDegrees;
-    if (lap != 0.0)
-        return GRIB_NOT_IMPLEMENTED;
+    if (lap != 0.0) {
+        grib_context_log(h->context, GRIB_LOG_ERROR,
+                         "Space View: Key '%s' must be 0 (satellite must be located in the equator plane)",
+                         sLatOfSubSatellitePointInDegrees);
+        return GRIB_GEOCALCULUS_PROBLEM;
+    }
 
     /*orient_angle = orientationInDegrees;*/
     /* if (orient_angle != 0.0) return GRIB_NOT_IMPLEMENTED; */
@@ -278,7 +282,7 @@ static int init(grib_iterator* iter, grib_handle* h, grib_arguments* args)
 
     /* adjustBadlyEncodedEcmwfGribs(h, &nx, &ny, &dx, &dy, &xp, &yp); */
     if (dx == 0 || dy == 0) {
-        grib_context_log(h->context, GRIB_LOG_ERROR, "Keys %s and %s must be greater than zero", sDx, sDy);
+        grib_context_log(h->context, GRIB_LOG_ERROR, "Space View: Keys %s and %s must be greater than zero", sDx, sDy);
         return GRIB_GEOCALCULUS_PROBLEM;
     }
     rx = angular_size / dx;
diff --git a/src/grib_parse_utils.c b/src/grib_parse_utils.c
index 230d68e32..f74fd1eb6 100644
--- a/src/grib_parse_utils.c
+++ b/src/grib_parse_utils.c
@@ -314,6 +314,7 @@ int grib_accessors_list_print(grib_handle* h, grib_accessors_list* al, const cha
     char long_format[]       = "%ld";   /* default format for printing integer keys */
     char default_separator[] = " ";
     grib_accessor* a         = al->accessor;
+    DebugAssert(a);
 
     /* Number of columns specified as 0 means print on ONE line i.e. num cols = infinity */
     if (maxcols == 0)
diff --git a/src/grib_value.c b/src/grib_value.c
index 59a75c6b6..9f27282e2 100644
--- a/src/grib_value.c
+++ b/src/grib_value.c
@@ -599,7 +599,9 @@ int grib_is_missing_string(grib_accessor* a, unsigned char* x, size_t len)
         }
     }
 
-    ret = (a == NULL || ((a->flags & GRIB_ACCESSOR_FLAG_CAN_BE_MISSING) && ret == 1)) ? 1 : 0;
+    if (!a) return ret;
+
+    ret = ( ((a->flags & GRIB_ACCESSOR_FLAG_CAN_BE_MISSING) && ret == 1) ) ? 1 : 0;
     return ret;
 }
 
diff --git a/tests/grib_ecc-1150.sh b/tests/grib_ecc-1150.sh
index c58cb950e..02ea73ff8 100755
--- a/tests/grib_ecc-1150.sh
+++ b/tests/grib_ecc-1150.sh
@@ -13,6 +13,7 @@ set -u
 # ---------------------------------------------------------
 # This is the test for the JIRA issue ECC-1150
 # ECC-1150: keys 'lowerLimit' & 'upperLimit' cannot be MISSING
+# See also ECC-1286
 # ---------------------------------------------------------
 label="grib_ecc-1150-test"
 tempGrib=temp.${label}.grib
@@ -60,12 +61,19 @@ ${tools_dir}/grib_filter $tempFilt $tempGrib
 # Encoding
 # ----------
 temp2=temp2.${label}.grib
-${tools_dir}/grib_set -s upperLimit=missing,lowerLimit=missing $tempGrib $temp2
+${tools_dir}/grib_set -s lowerLimit=missing,upperLimit=missing  $tempGrib $temp2
 grib_check_key_equals $temp2 lowerLimit,upperLimit 'MISSING MISSING'
 grib_check_key_equals $temp2 \
   scaleFactorOfLowerLimit,scaledValueOfLowerLimit,scaleFactorOfUpperLimit,scaledValueOfUpperLimit \
   'MISSING MISSING MISSING MISSING'
-rm -f $temp2
+
+${tools_dir}/grib_set -s lowerLimit=3.14,upperLimit=missing $tempGrib $temp2
+grib_check_key_equals $temp2 lowerLimit,upperLimit '3.14 MISSING'
+
+# Negative values
+${tools_dir}/grib_set -s lowerLimit=-6.6,upperLimit=-1.02 $tempGrib $temp2
+grib_check_key_equals $temp2 scaleFactorOfLowerLimit,scaledValueOfLowerLimit,lowerLimit "1 -66 -6.6"
+grib_check_key_equals $temp2 scaleFactorOfUpperLimit,scaledValueOfUpperLimit,upperLimit "2 -102 -1.02"
 
 # Clean up
-rm -f $tempGrib $tempFilt
+rm -f $tempGrib $tempFilt $temp2