diff --git a/definitions/grib1/section.1.def b/definitions/grib1/section.1.def
index 2bda52ec7..4136b0395 100644
--- a/definitions/grib1/section.1.def
+++ b/definitions/grib1/section.1.def
@@ -325,3 +325,10 @@ if (stepTypeForConversion is "accum" || stepTypeForConversion is "max" || stepTy
 meta md5Section1 md5(offsetSection1,section1Length);
 # md5(start,length,blacklisted1,blacklisted2,...);
 meta md5Product md5(offsetSection1,section1Length,gridDefinition,section1Flags,decimalScaleFactor);
+
+# ECC-1806
+concept_nofail paramIdForConversion(zero) {
+    262000 = {gribTablesVersionNo=174;indicatorOfParameter=98; centre=98;} # 174098 -> 262000
+    262104 = {gribTablesVersionNo=151;indicatorOfParameter=163;centre=98;} # 151163 -> 262104
+    262124 = {gribTablesVersionNo=151;indicatorOfParameter=145;centre=98;} # 151145 -> 262124
+} : long_type;
diff --git a/definitions/grib2/boot.def b/definitions/grib2/boot.def
index d2c44fb74..7cba8747b 100644
--- a/definitions/grib2/boot.def
+++ b/definitions/grib2/boot.def
@@ -53,3 +53,6 @@ concept isTemplateDeprecated(false) {
 concept isTemplateExperimental(false) {
     1 = { template_is_experimental = 1; }
 }
+
+# ECC-1806
+transient paramIdForConversion = 0;
diff --git a/src/grib_accessor_class_concept.cc b/src/grib_accessor_class_concept.cc
index efda63e55..cdfb31245 100644
--- a/src/grib_accessor_class_concept.cc
+++ b/src/grib_accessor_class_concept.cc
@@ -455,6 +455,20 @@ static int pack_long(grib_accessor* a, const long* val, size_t* len)
     //if(*len > 1)
     //    return GRIB_NOT_IMPLEMENTED;
 
+    // ECC-1806: GRIB: Change of paramId in conversion from GRIB1 to GRIB2
+    if (STR_EQUAL(a->name,"paramId")) {
+        grib_handle* h = grib_handle_of_accessor(a);
+        long edition = 0;
+        if (grib_get_long(h, "edition", &edition) == GRIB_SUCCESS && edition == 2) {
+            long newParamId = 0;
+            if (grib_get_long(h, "paramIdForConversion", &newParamId) == GRIB_SUCCESS) {
+                if (newParamId > 0) {
+                    snprintf(buf, sizeof(buf), "%ld", newParamId);
+                }
+            }
+        }
+    }
+
     s = strlen(buf) + 1;
     return pack_string(a, buf, &s);
 }