diff --git a/pool/object_put_pool_transformer.go b/pool/object_put_pool_transformer.go
index e596aeb..fd6ab28 100644
--- a/pool/object_put_pool_transformer.go
+++ b/pool/object_put_pool_transformer.go
@@ -2,6 +2,7 @@ package pool
 
 import (
 	"context"
+	"fmt"
 
 	sdkClient "git.frostfs.info/TrueCloudLab/frostfs-sdk-go/client"
 	apistatus "git.frostfs.info/TrueCloudLab/frostfs-sdk-go/client/status"
@@ -166,5 +167,5 @@ func (it *internalTarget) tryPutSingle(ctx context.Context, o *object.Object) (b
 		}
 		return true, nil
 	}
-	return true, err
+	return true, fmt.Errorf("try put single '%s': %w", it.address, err)
 }
diff --git a/pool/pool.go b/pool/pool.go
index 1f69577..02b4976 100644
--- a/pool/pool.go
+++ b/pool/pool.go
@@ -2670,6 +2670,10 @@ func (p *Pool) DeleteObject(ctx context.Context, prm PrmObjectDelete) error {
 	prmCtx.useDefaultSession()
 	prmCtx.useVerb(session.VerbObjectDelete)
 	prmCtx.useAddress(prm.addr)
+	cp, err := p.connection()
+	if err != nil {
+		return err
+	}
 
 	if prm.stoken == nil { // collect phy objects only if we are about to open default session
 		var tokens relations.Tokens
@@ -2677,7 +2681,7 @@ func (p *Pool) DeleteObject(ctx context.Context, prm PrmObjectDelete) error {
 
 		relatives, err := relations.ListAllRelations(ctx, p, prm.addr.Container(), prm.addr.Object(), tokens)
 		if err != nil {
-			return fmt.Errorf("failed to collect relatives: %w", err)
+			return fmt.Errorf("failed to collect relatives via client %s: %w", cp.address(), err)
 		}
 
 		if len(relatives) != 0 {
@@ -2691,7 +2695,7 @@ func (p *Pool) DeleteObject(ctx context.Context, prm PrmObjectDelete) error {
 	var cc callContext
 	cc.sessionTarget = prm.UseSession
 
-	err := p.initCallContext(&cc, prm.prmCommon, prmCtx)
+	err = p.initCallContext(&cc, prm.prmCommon, prmCtx)
 	if err != nil {
 		return err
 	}
@@ -3197,6 +3201,10 @@ func (p *Pool) GetSplitInfo(ctx context.Context, cnrID cid.ID, objID oid.ID, tok
 	var addr oid.Address
 	addr.SetContainer(cnrID)
 	addr.SetObject(objID)
+	cp, err := p.connection()
+	if err != nil {
+		return nil, err
+	}
 
 	var prm PrmObjectHead
 	prm.SetAddress(addr)
@@ -3208,7 +3216,7 @@ func (p *Pool) GetSplitInfo(ctx context.Context, cnrID cid.ID, objID oid.ID, tok
 	}
 	prm.MarkRaw()
 
-	_, err := p.HeadObject(ctx, prm)
+	_, err = p.HeadObject(ctx, prm)
 
 	var errSplit *object.SplitInfoError
 	var errECInfo *object.ECInfoError
@@ -3219,7 +3227,7 @@ func (p *Pool) GetSplitInfo(ctx context.Context, cnrID cid.ID, objID oid.ID, tok
 	case err == nil || errors.As(err, &errECInfo):
 		return nil, relations.ErrNoSplitInfo
 	default:
-		return nil, fmt.Errorf("failed to get raw object header: %w", err)
+		return nil, fmt.Errorf("failed to get raw object header by addr: %s %w", cp.address(), err)
 	}
 }
 
@@ -3228,6 +3236,10 @@ func (p *Pool) ListChildrenByLinker(ctx context.Context, cnrID cid.ID, objID oid
 	var addr oid.Address
 	addr.SetContainer(cnrID)
 	addr.SetObject(objID)
+	cp, err := p.connection()
+	if err != nil {
+		return nil, err
+	}
 
 	var prm PrmObjectHead
 	prm.SetAddress(addr)
@@ -3240,7 +3252,7 @@ func (p *Pool) ListChildrenByLinker(ctx context.Context, cnrID cid.ID, objID oid
 
 	res, err := p.HeadObject(ctx, prm)
 	if err != nil {
-		return nil, fmt.Errorf("failed to get linking object's header: %w", err)
+		return nil, fmt.Errorf("failed to get linking object's header by addr: %s %w", cp.address(), err)
 	}
 
 	return res.Children(), nil
@@ -3251,6 +3263,10 @@ func (p *Pool) GetLeftSibling(ctx context.Context, cnrID cid.ID, objID oid.ID, t
 	var addr oid.Address
 	addr.SetContainer(cnrID)
 	addr.SetObject(objID)
+	cp, err := p.connection()
+	if err != nil {
+		return oid.ID{}, err
+	}
 
 	var prm PrmObjectHead
 	prm.SetAddress(addr)
@@ -3263,7 +3279,7 @@ func (p *Pool) GetLeftSibling(ctx context.Context, cnrID cid.ID, objID oid.ID, t
 
 	res, err := p.HeadObject(ctx, prm)
 	if err != nil {
-		return oid.ID{}, fmt.Errorf("failed to read split chain member's header: %w", err)
+		return oid.ID{}, fmt.Errorf("failed to read split chain member's header by addr: %s %w", cp.address(), err)
 	}
 
 	idMember, ok := res.PreviousID()
@@ -3287,10 +3303,14 @@ func (p *Pool) FindSiblingBySplitID(ctx context.Context, cnrID cid.ID, splitID *
 	if tokens.Session != nil {
 		prm.UseSession(*tokens.Session)
 	}
+	cp, err := p.connection()
+	if err != nil {
+		return nil, err
+	}
 
 	res, err := p.SearchObjects(ctx, prm)
 	if err != nil {
-		return nil, fmt.Errorf("failed to search objects by split ID: %w", err)
+		return nil, fmt.Errorf("failed to search objects by split ID by addr %s: %w", cp.address(), err)
 	}
 
 	var members []oid.ID
@@ -3299,7 +3319,7 @@ func (p *Pool) FindSiblingBySplitID(ctx context.Context, cnrID cid.ID, splitID *
 		return false
 	})
 	if err != nil {
-		return nil, fmt.Errorf("failed to iterate found objects: %w", err)
+		return nil, fmt.Errorf("failed to iterate found objects by addr %s: %w", cp.address(), err)
 	}
 
 	return members, nil
@@ -3319,10 +3339,14 @@ func (p *Pool) FindSiblingByParentID(ctx context.Context, cnrID cid.ID, objID oi
 	if tokens.Session != nil {
 		prm.UseSession(*tokens.Session)
 	}
+	cp, err := p.connection()
+	if err != nil {
+		return nil, err
+	}
 
 	resSearch, err := p.SearchObjects(ctx, prm)
 	if err != nil {
-		return nil, fmt.Errorf("failed to find object children: %w", err)
+		return nil, fmt.Errorf("failed to find object children by addr %s: %w", cp.address(), err)
 	}
 
 	var res []oid.ID
@@ -3331,7 +3355,7 @@ func (p *Pool) FindSiblingByParentID(ctx context.Context, cnrID cid.ID, objID oi
 		return false
 	})
 	if err != nil {
-		return nil, fmt.Errorf("failed to iterate found objects: %w", err)
+		return nil, fmt.Errorf("failed to iterate found objects by addr %s: %w", cp.address(), err)
 	}
 
 	return res, nil
diff --git a/pool/tree/pool.go b/pool/tree/pool.go
index ddfdc0e..b9de34e 100644
--- a/pool/tree/pool.go
+++ b/pool/tree/pool.go
@@ -657,7 +657,7 @@ func (p *Pool) Close() error {
 	for _, group := range p.innerPools {
 		for _, cl := range group.clients {
 			if closeErr := cl.close(); closeErr != nil {
-				p.log(zapcore.ErrorLevel, "close client connection", zap.Error(closeErr))
+				p.log(zapcore.ErrorLevel, "close client connection", zap.Error(closeErr), zap.String("addr", cl.endpoint()))
 				err = closeErr
 			}
 		}
@@ -676,7 +676,7 @@ func (p *Pool) closeClientMapConnections() (err error) {
 
 	for _, cl := range p.clientMap {
 		if closeErr := cl.close(); closeErr != nil {
-			p.log(zapcore.ErrorLevel, "close client connection", zap.Error(closeErr))
+			p.log(zapcore.ErrorLevel, "close client connection", zap.Error(closeErr), zap.String("addr", cl.endpoint()))
 			err = closeErr
 		}
 	}
@@ -962,7 +962,7 @@ LOOP:
 				treeCl, err = p.getNewTreeClient(ctx, cnrNode)
 				if err != nil {
 					finErr = finalError(finErr, err)
-					p.log(zap.DebugLevel, "failed to create tree client", zap.String("request_id", reqID), zap.Int("remaining attempts", attempts))
+					p.log(zap.DebugLevel, "failed to create tree client", zap.String("request_id", reqID), zap.Int("remaining attempts", attempts), zap.String("addr", treeCl.endpoint()))
 					continue
 				}