diff --git a/engine/resources.go b/engine/resources.go
index 2c0d0eaf7..388b76d33 100755
--- a/engine/resources.go
+++ b/engine/resources.go
@@ -533,7 +533,10 @@ func (rS *ResourceService) V1ResourcesForEvent(args utils.ArgRSv1ResourceUsage,
 // V1AuthorizeResources queries service to find if an Usage is allowed
 func (rS *ResourceService) V1AuthorizeResources(args utils.ArgRSv1ResourceUsage, reply *string) (err error) {
 	var alcMessage string
-	if missing := utils.MissingStructFields(&args, []string{"CGREvent.Tenant", "UsageID"}); len(missing) != 0 { //Params missing
+	if missing := utils.MissingStructFields(&args.CGREvent, []string{"Tenant"}); len(missing) != 0 { //Params missing
+		return utils.NewErrMandatoryIeMissing(missing...)
+	}
+	if missing := utils.MissingStructFields(&args, []string{"UsageID"}); len(missing) != 0 { //Params missing
 		return utils.NewErrMandatoryIeMissing(missing...)
 	}
 	mtcRLs := rS.cachedResourcesForEvent(args.TenantID())
@@ -560,7 +563,10 @@ func (rS *ResourceService) V1AuthorizeResources(args utils.ArgRSv1ResourceUsage,
 
 // V1AllocateResource is called when a resource requires allocation
 func (rS *ResourceService) V1AllocateResource(args utils.ArgRSv1ResourceUsage, reply *string) (err error) {
-	if missing := utils.MissingStructFields(&args, []string{"CGREvent.Tenant", "UsageID"}); len(missing) != 0 { //Params missing
+	if missing := utils.MissingStructFields(&args.CGREvent, []string{"Tenant"}); len(missing) != 0 { //Params missing
+		return utils.NewErrMandatoryIeMissing(missing...)
+	}
+	if missing := utils.MissingStructFields(&args, []string{"UsageID"}); len(missing) != 0 { //Params missing
 		return utils.NewErrMandatoryIeMissing(missing...)
 	}
 	var wasCached bool
@@ -613,7 +619,10 @@ func (rS *ResourceService) V1AllocateResource(args utils.ArgRSv1ResourceUsage, r
 
 // V1ReleaseResource is called when we need to clear an allocation
 func (rS *ResourceService) V1ReleaseResource(args utils.ArgRSv1ResourceUsage, reply *string) (err error) {
-	if missing := utils.MissingStructFields(&args, []string{"CGREvent.Tenant", "UsageID"}); len(missing) != 0 { //Params missing
+	if missing := utils.MissingStructFields(&args.CGREvent, []string{"Tenant"}); len(missing) != 0 { //Params missing
+		return utils.NewErrMandatoryIeMissing(missing...)
+	}
+	if missing := utils.MissingStructFields(&args, []string{"UsageID"}); len(missing) != 0 { //Params missing
 		return utils.NewErrMandatoryIeMissing(missing...)
 	}
 	mtcRLs := rS.cachedResourcesForEvent(args.UsageID)
diff --git a/engine/resources_test.go b/engine/resources_test.go
index c5a73ed68..a52f19f9c 100644
--- a/engine/resources_test.go
+++ b/engine/resources_test.go
@@ -259,3 +259,37 @@ func TestRSCacheSetGet(t *testing.T) {
 		t.Errorf("Expecting: %+v, received: %+v", r, x)
 	}
 }
+
+func TestV1AuthorizeResourceMissingStruct(t *testing.T) {
+	data, _ := NewMapStorage()
+	dmresmiss := NewDataManager(data)
+
+	rserv := &ResourceService{
+		dm:            dmresmiss,
+		filterS:       &FilterS{dm: dmresmiss},
+		indexedFields: []string{}, // speed up query on indexes
+	}
+	var reply *string
+	argsMissingTenant := utils.ArgRSv1ResourceUsage{
+		CGREvent: utils.CGREvent{
+			ID:    "id1",
+			Event: map[string]interface{}{},
+		},
+		UsageID: "test1", // ResourceUsage Identifier
+		Units:   20,
+	}
+	argsMissingUsageID := utils.ArgRSv1ResourceUsage{
+		CGREvent: utils.CGREvent{
+			Tenant: "cgrates.org",
+			ID:     "id1",
+			Event:  map[string]interface{}{},
+		},
+		Units: 20,
+	}
+	if err := rserv.V1AuthorizeResources(argsMissingTenant, reply); err.Error() != "MANDATORY_IE_MISSING: [Tenant]" {
+		t.Error(err.Error())
+	}
+	if err := rserv.V1AuthorizeResources(argsMissingUsageID, reply); err.Error() != "MANDATORY_IE_MISSING: [UsageID]" {
+		t.Error(err.Error())
+	}
+}