diff --git a/engine/cdr.go b/engine/cdr.go
index 847cd7b82..64bdce714 100644
--- a/engine/cdr.go
+++ b/engine/cdr.go
@@ -305,12 +305,14 @@ func (cdr *CDR) String() string {
 // combimedCdrFieldVal groups together CDRs with same CGRID and combines their values matching filter field ID
 func (cdr *CDR) combimedCdrFieldVal(cfgCdrFld *config.FCTemplate, groupCDRs []*CDR, filterS *FilterS) (string, error) {
 	var combimedVal string // Will result as combination of the field values, filters must match
-
+	cmbReqMp := cdr.AsMapStorage()[utils.MetaReq]
 	for _, grpCDR := range groupCDRs {
 		if cdr.CGRID != grpCDR.CGRID {
 			continue // We only care about cdrs with same primary cdr behind
 		}
-		if pass, err := filterS.Pass(grpCDR.Tenant, cfgCdrFld.Filters, grpCDR.AsMapStorage()); err != nil {
+		fltrMp := grpCDR.AsMapStorage()
+		fltrMp[utils.MetaCmedReq] = cmbReqMp // so we can relate in filters
+		if pass, err := filterS.Pass(grpCDR.Tenant, cfgCdrFld.Filters, fltrMp); err != nil {
 			return utils.EmptyString, err
 		} else if !pass {
 			continue
diff --git a/engine/cdr_test.go b/engine/cdr_test.go
index 99bf80bfd..6a7aef181 100644
--- a/engine/cdr_test.go
+++ b/engine/cdr_test.go
@@ -1454,7 +1454,7 @@ func TestCDRcombimedCdrFieldVal(t *testing.T) {
 	tpFld := &config.FCTemplate{
 		Tag:     "TestCombiMed",
 		Type:    utils.META_COMBIMED,
-		Filters: []string{"*string:~*req.RunID:testRun1"},
+		Filters: []string{"*string:~*cmedreq.RunID:*default", "*string:~*req.RunID:testRun1"},
 		Value:   config.NewRSRParsersMustCompile("~*req.Cost", true, utils.INFIELD_SEP),
 	}
 	cfg, err := config.NewDefaultCGRConfig()
@@ -1468,6 +1468,23 @@ func TestCDRcombimedCdrFieldVal(t *testing.T) {
 		t.Errorf("Expected : %+v, received: %+v", "1.22", out)
 	}
 
+	tpFld = &config.FCTemplate{
+		Tag:     "TestCombiMedFail",
+		Type:    utils.META_COMBIMED,
+		Filters: []string{"*string:~*cmedreq.RunID:*notdefault", "*string:~*req.RunID:testRun1"},
+		Value:   config.NewRSRParsersMustCompile("~*req.Cost", true, utils.INFIELD_SEP),
+	}
+	cfg, err = config.NewDefaultCGRConfig()
+	if err != nil {
+		t.Errorf("Error: %+v", err)
+	}
+
+	if out, err := cdr.combimedCdrFieldVal(tpFld, groupCDRs, &FilterS{cfg: cfg}); err != nil {
+		t.Error(err)
+	} else if out != utils.EmptyString {
+		t.Errorf("Expected : %+v, received: %+v", utils.EmptyString, out)
+	}
+
 }
 
 func TestUsageAsCDR(t *testing.T) {
diff --git a/engine/filters.go b/engine/filters.go
index 2671cdb39..0115135c4 100644
--- a/engine/filters.go
+++ b/engine/filters.go
@@ -487,7 +487,8 @@ func (fS *FilterS) getFieldNameDataProvider(initialDP utils.DataProvider,
 		strings.HasPrefix(fieldName, utils.DynamicDataPrefix+utils.MetaRep),
 		strings.HasPrefix(fieldName, utils.DynamicDataPrefix+utils.MetaCGRAReq),
 		strings.HasPrefix(fieldName, utils.DynamicDataPrefix+utils.MetaAct),
-		strings.HasPrefix(fieldName, utils.DynamicDataPrefix+utils.MetaEC):
+		strings.HasPrefix(fieldName, utils.DynamicDataPrefix+utils.MetaEC),
+		strings.HasPrefix(fieldName, utils.DynamicDataPrefix+utils.MetaCmedReq):
 		dp = initialDP
 	// don't need to take out the prefix because the navigable map have ~*req prefix
 	case fieldName == utils.EmptyString:
diff --git a/utils/consts.go b/utils/consts.go
index 5d030a374..fdf17c1e7 100644
--- a/utils/consts.go
+++ b/utils/consts.go
@@ -560,6 +560,7 @@ const (
 	MetaHdr                     = "*hdr"
 	MetaTrl                     = "*trl"
 	MetaTmp                     = "*tmp"
+	MetaCmedReq                 = "*cmedreq" // used with combinedMediation
 	CGROriginHost               = "cgr_originhost"
 	MetaInitiate                = "*initiate"
 	MetaFD                      = "*fd"