diff --git a/app/vmselect/promql/timeseries.go b/app/vmselect/promql/timeseries.go
index f40907cc1..a48089b74 100644
--- a/app/vmselect/promql/timeseries.go
+++ b/app/vmselect/promql/timeseries.go
@@ -288,7 +288,6 @@ func marshalMetricTagsFast(dst []byte, tags []storage.Tag) []byte {
 }
 
 func marshalMetricNameSorted(dst []byte, mn *storage.MetricName) []byte {
-	// Do not marshal AccountID and ProjectID, since they are unused.
 	dst = marshalBytesFast(dst, mn.MetricGroup)
 	sortMetricTags(mn.Tags)
 	dst = marshalMetricTagsFast(dst, mn.Tags)
diff --git a/lib/storage/index_db_test.go b/lib/storage/index_db_test.go
index c76a117c2..2dc3e6084 100644
--- a/lib/storage/index_db_test.go
+++ b/lib/storage/index_db_test.go
@@ -456,8 +456,6 @@ func TestIndexDBOpenClose(t *testing.T) {
 }
 
 func TestIndexDB(t *testing.T) {
-	const accountsCount = 3
-	const projectsCount = 2
 	const metricGroups = 10
 
 	t.Run("serial", func(t *testing.T) {
@@ -486,7 +484,7 @@ func TestIndexDB(t *testing.T) {
 		if err := testIndexDBBigMetricName(db); err != nil {
 			t.Fatalf("unexpected error: %s", err)
 		}
-		mns, tsids, err := testIndexDBGetOrCreateTSIDByName(db, accountsCount, projectsCount, metricGroups)
+		mns, tsids, err := testIndexDBGetOrCreateTSIDByName(db, metricGroups)
 		if err != nil {
 			t.Fatalf("unexpected error: %s", err)
 		}
@@ -547,7 +545,7 @@ func TestIndexDB(t *testing.T) {
 					ch <- err
 					return
 				}
-				mns, tsid, err := testIndexDBGetOrCreateTSIDByName(db, accountsCount, projectsCount, metricGroups)
+				mns, tsid, err := testIndexDBGetOrCreateTSIDByName(db, metricGroups)
 				if err != nil {
 					ch <- err
 					return
@@ -648,7 +646,7 @@ func testIndexDBBigMetricName(db *indexDB) error {
 	return nil
 }
 
-func testIndexDBGetOrCreateTSIDByName(db *indexDB, accountsCount, projectsCount, metricGroups int) ([]MetricName, []TSID, error) {
+func testIndexDBGetOrCreateTSIDByName(db *indexDB, metricGroups int) ([]MetricName, []TSID, error) {
 	// Create tsids.
 	var mns []MetricName
 	var tsids []TSID
diff --git a/lib/storage/storage.go b/lib/storage/storage.go
index 080254cbf..bfd73989e 100644
--- a/lib/storage/storage.go
+++ b/lib/storage/storage.go
@@ -643,7 +643,7 @@ func (s *Storage) SearchTagValues(tagKey []byte, maxTagValues int) ([]string, er
 	return s.idb().SearchTagValues(tagKey, maxTagValues)
 }
 
-// SearchTagEntries returns a list of (tagName -> tagValues) for (accountID, projectID).
+// SearchTagEntries returns a list of (tagName -> tagValues)
 func (s *Storage) SearchTagEntries(maxTagKeys, maxTagValues int) ([]TagEntry, error) {
 	idb := s.idb()
 	keys, err := idb.SearchTagKeys(maxTagKeys)
diff --git a/lib/storage/tsid.go b/lib/storage/tsid.go
index 7e3904e9a..42b9e3ccd 100644
--- a/lib/storage/tsid.go
+++ b/lib/storage/tsid.go
@@ -14,7 +14,7 @@ import (
 // grouping of related metrics.
 // It is OK if their meaning differ from their naming.
 type TSID struct {
-	// MetricGroupID is the id of metric group inside the given project.
+	// MetricGroupID is the id of metric group.
 	//
 	// MetricGroupID must be unique.
 	//
@@ -29,8 +29,7 @@ type TSID struct {
 	//   memory_usage{datacenter="foo2", job="bar1", instance="baz2:1234"}
 	MetricGroupID uint64
 
-	// JobID is the id of an individual job (aka service)
-	// for the given project.
+	// JobID is the id of an individual job (aka service).
 	//
 	// JobID must be unique.
 	//
@@ -38,8 +37,7 @@ type TSID struct {
 	// See https://prometheus.io/docs/concepts/jobs_instances/ for details.
 	JobID uint32
 
-	// InstanceID is the id of an instance (aka process)
-	// for the given project.
+	// InstanceID is the id of an instance (aka process).
 	//
 	// InstanceID must be unique.
 	//