diff --git a/protocol/x/subaccounts/keeper/subaccount.go b/protocol/x/subaccounts/keeper/subaccount.go
index a67c89d9e6a..505605f2120 100644
--- a/protocol/x/subaccounts/keeper/subaccount.go
+++ b/protocol/x/subaccounts/keeper/subaccount.go
@@ -432,32 +432,6 @@ func (k Keeper) CanUpdateSubaccounts(
 	return success, successPerUpdate, err
 }
 
-func checkPositionUpdatable(
-	ctx sdk.Context,
-	pk types.ProductKeeper,
-	p types.PositionSize,
-) (
-	err error,
-) {
-	updatable, err := pk.IsPositionUpdatable(
-		ctx,
-		p.GetId(),
-	)
-	if err != nil {
-		return err
-	}
-
-	if !updatable {
-		return errorsmod.Wrapf(
-			types.ErrProductPositionNotUpdatable,
-			"type: %v, id: %d",
-			p.GetProductType(),
-			p.GetId(),
-		)
-	}
-	return nil
-}
-
 // internalCanUpdateSubaccounts will validate all `updates` to the relevant subaccounts and compute
 // if any of the updates led to an isolated perpetual position being opened or closed.
 // The `updates` do not have to contain `Subaccounts` with unique `SubaccountIds`.
@@ -587,18 +561,32 @@ func (k Keeper) internalCanUpdateSubaccounts(
 	for i, u := range settledUpdates {
 		// Check all updated perps are updatable.
 		for _, perpUpdate := range u.PerpetualUpdates {
-			err := checkPositionUpdatable(ctx, k.perpetualsKeeper, perpUpdate)
+			updatable, err := k.perpetualsKeeper.IsPositionUpdatable(ctx, perpUpdate.GetId())
 			if err != nil {
 				return false, nil, err
 			}
+			if !updatable {
+				return false, nil, errorsmod.Wrapf(
+					types.ErrProductPositionNotUpdatable,
+					"type: PerpetualPosition, id: %d",
+					perpUpdate.GetId(),
+				)
+			}
 		}
 
 		// Check all updated assets are updatable.
 		for _, assetUpdate := range u.AssetUpdates {
-			err := checkPositionUpdatable(ctx, k.assetsKeeper, assetUpdate)
+			updatable, err := k.assetsKeeper.IsPositionUpdatable(ctx, assetUpdate.GetId())
 			if err != nil {
 				return false, nil, err
 			}
+			if !updatable {
+				return false, nil, errorsmod.Wrapf(
+					types.ErrProductPositionNotUpdatable,
+					"type: AssetPosition, id: %d",
+					assetUpdate.GetId(),
+				)
+			}
 		}
 
 		// Get the new collateralization and margin requirements with the update applied.
diff --git a/protocol/x/subaccounts/lib/updates.go b/protocol/x/subaccounts/lib/updates.go
index 5185bea237e..e7afcab07ea 100644
--- a/protocol/x/subaccounts/lib/updates.go
+++ b/protocol/x/subaccounts/lib/updates.go
@@ -1,11 +1,9 @@
 package lib
 
 import (
-	"fmt"
 	"math/big"
 	"sort"
 
-	errorsmod "cosmossdk.io/errors"
 	"github.com/dydxprotocol/v4-chain/protocol/dtypes"
 	"github.com/dydxprotocol/v4-chain/protocol/lib"
 	"github.com/dydxprotocol/v4-chain/protocol/lib/margin"
@@ -161,19 +159,17 @@ func ApplyUpdatesToPositions[
 	P types.PositionSize,
 	U types.PositionSize,
 ](positions []P, updates []U) ([]types.PositionSize, error) {
-	var result []types.PositionSize = make([]types.PositionSize, 0, len(positions)+len(updates))
+	updateIds := lib.MapSlice(updates, func(u U) uint32 { return u.GetId() })
+	if lib.ContainsDuplicates(updateIds) {
+		return nil, types.ErrNonUniqueUpdatesPosition
+	}
 
+	var result []types.PositionSize = make([]types.PositionSize, 0, len(positions)+len(updates))
 	updateMap := make(map[uint32]types.PositionSize, len(updates))
 	updateIndexMap := make(map[uint32]int, len(updates))
 	for i, update := range updates {
 		// Check for non-unique updates (two updates to the same position).
 		id := update.GetId()
-		_, exists := updateMap[id]
-		if exists {
-			errMsg := fmt.Sprintf("Multiple updates exist for position %v", update.GetId())
-			return nil, errorsmod.Wrap(types.ErrNonUniqueUpdatesPosition, errMsg)
-		}
-
 		updateMap[id] = update
 		updateIndexMap[id] = i
 		result = append(result, update)
diff --git a/protocol/x/subaccounts/types/position_size.go b/protocol/x/subaccounts/types/position_size.go
index 39688ae2eb6..80ef9d38b4a 100644
--- a/protocol/x/subaccounts/types/position_size.go
+++ b/protocol/x/subaccounts/types/position_size.go
@@ -8,12 +8,6 @@ import (
 	"github.com/dydxprotocol/v4-chain/protocol/dtypes"
 )
 
-const (
-	AssetProductType     = "asset"
-	PerpetualProductType = "perpetual"
-	UnknownProductTYpe   = "unknown"
-)
-
 // PositionSize is an interface for expressing the size of a position
 type PositionSize interface {
 	// Returns true if and only if the position size is positive.
@@ -21,7 +15,6 @@ type PositionSize interface {
 	// Returns the signed position size in big.Int.
 	GetBigQuantums() *big.Int
 	GetId() uint32
-	GetProductType() string
 }
 
 type PositionUpdate struct {
@@ -74,10 +67,6 @@ func (m *AssetPosition) GetIsLong() bool {
 	return m.GetBigQuantums().Sign() > 0
 }
 
-func (m *AssetPosition) GetProductType() string {
-	return AssetProductType
-}
-
 func (m *PerpetualPosition) GetId() uint32 {
 	return m.GetPerpetualId()
 }
@@ -110,10 +99,6 @@ func (m *PerpetualPosition) GetIsLong() bool {
 	return m.GetBigQuantums().Sign() > 0
 }
 
-func (m *PerpetualPosition) GetProductType() string {
-	return PerpetualProductType
-}
-
 func (au AssetUpdate) GetIsLong() bool {
 	return au.GetBigQuantums().Sign() > 0
 }
@@ -126,10 +111,6 @@ func (au AssetUpdate) GetId() uint32 {
 	return au.AssetId
 }
 
-func (au AssetUpdate) GetProductType() string {
-	return AssetProductType
-}
-
 func (pu PerpetualUpdate) GetBigQuantums() *big.Int {
 	return pu.BigQuantumsDelta
 }
@@ -142,10 +123,6 @@ func (pu PerpetualUpdate) GetIsLong() bool {
 	return pu.GetBigQuantums().Sign() > 0
 }
 
-func (pu PerpetualUpdate) GetProductType() string {
-	return PerpetualProductType
-}
-
 func (pu PositionUpdate) GetId() uint32 {
 	return pu.Id
 }
@@ -161,7 +138,3 @@ func (pu PositionUpdate) SetBigQuantums(bigQuantums *big.Int) {
 func (pu PositionUpdate) GetBigQuantums() *big.Int {
 	return pu.BigQuantums
 }
-func (pu PositionUpdate) GetProductType() string {
-	// PositionUpdate is generic and doesn't have a product type.
-	return UnknownProductTYpe
-}