diff --git a/kusto/ingest/ingest.go b/kusto/ingest/ingest.go
index 34a4e548..4872828d 100644
--- a/kusto/ingest/ingest.go
+++ b/kusto/ingest/ingest.go
@@ -9,11 +9,9 @@ import (
 	"io"
 	"sync"
 	"sync/atomic"
-	"time"
 
 	"github.com/Azure/azure-kusto-go/kusto"
 	"github.com/Azure/azure-kusto-go/kusto/data/errors"
-	"github.com/Azure/azure-kusto-go/kusto/data/table"
 	"github.com/Azure/azure-kusto-go/kusto/ingest/internal/conn"
 	"github.com/Azure/azure-kusto-go/kusto/ingest/internal/filesystem"
 	"github.com/Azure/azure-kusto-go/kusto/ingest/internal/properties"
@@ -60,12 +58,6 @@ type Ingestion struct {
 
 	connMu     sync.Mutex
 	streamConn *conn.Conn
-
-	// mappingMu protects mappingNames.
-	mappingsMu sync.Mutex
-	// mappings stores mappings on the server.
-	mappings          map[string]mapEntry
-	lastMappingLookup time.Time
 }
 
 // New is the constructor for Ingestion.
@@ -81,12 +73,11 @@ func New(client *kusto.Client, db, table string) (*Ingestion, error) {
 	}
 
 	i := &Ingestion{
-		client:   client,
-		mgr:      mgr,
-		db:       db,
-		table:    table,
-		fs:       fs,
-		mappings: map[string]mapEntry{},
+		client: client,
+		mgr:    mgr,
+		db:     db,
+		table:  table,
+		fs:     fs,
 	}
 
 	return i, nil
@@ -351,12 +342,6 @@ func (i *Ingestion) FromFile(ctx context.Context, fPath string, options ...FileO
 		}
 	}
 
-	if props.Ingestion.Additional.IngestionMappingRef != "" {
-		if err := i.haveMappingRef(ctx, props.Ingestion.Additional.IngestionMappingRef); err != nil {
-			return err
-		}
-	}
-
 	local, err := filesystem.IsLocalPath(fPath)
 	if err != nil {
 		return err
@@ -400,12 +385,6 @@ func (i *Ingestion) FromReader(ctx context.Context, reader io.Reader, options ..
 		return fmt.Errorf("cannot use DeleteLocalSource() with FromReader()")
 	}
 
-	if props.Ingestion.Additional.IngestionMappingRef != "" {
-		if err := i.haveMappingRef(ctx, props.Ingestion.Additional.IngestionMappingRef); err != nil {
-			return err
-		}
-	}
-
 	return i.fs.Reader(ctx, reader, props)
 }
 
@@ -424,10 +403,6 @@ const mib = 1024 * 1024
 // https://docs.microsoft.com/en-us/azure/kusto/management/create-ingestion-mapping-command
 // The context object can be used with a timeout or cancel to limit the request time.
 func (i *Ingestion) Stream(ctx context.Context, payload []byte, format DataFormat, mappingName string) error {
-	if err := i.haveMappingRef(ctx, mappingName); err != nil {
-		return err
-	}
-
 	c, err := i.getStreamConn()
 	if err != nil {
 		return err
@@ -479,42 +454,3 @@ func (i *Ingestion) newProp(auth string) properties.All {
 		},
 	}
 }
-
-var mapCacheDur = 5 * time.Minute
-
-func (i *Ingestion) haveMappingRef(ctx context.Context, ref string) error {
-	i.mappingsMu.Lock()
-	defer i.mappingsMu.Unlock()
-
-	if time.Now().Sub(i.lastMappingLookup) < mapCacheDur {
-		if _, ok := i.mappings[ref]; ok {
-			return nil
-		}
-		return errors.ES(errors.OpFileIngest, errors.KClientArgs, "could not find a mapping reference for %q", ref)
-	}
-
-	iter, err := i.client.Mgmt(ctx, i.db, kusto.NewStmt(".show ingestion mappings"))
-	if err != nil {
-		return err
-	}
-	m := map[string]mapEntry{}
-	err = iter.Do(
-		func(row *table.Row) error {
-			mapping := mapEntry{}
-			if err := row.ToStruct(&mapping); err != nil {
-				return errors.ES(errors.OpFileIngest, errors.KInternal, "problem converting .show ingestion mappings to struct: %s", err)
-			}
-			m[mapping.Name] = mapping
-			return nil
-		},
-	)
-	if err != nil {
-		return err
-	}
-	_, ok := m[ref]
-	if !ok {
-		return errors.ES(errors.OpFileIngest, errors.KClientArgs, "could not find a mapping reference for %q", ref)
-	}
-	i.mappings = m
-	return nil
-}