diff --git a/internal/services/order_service/internal/orders/exceptions/domain_exceptions/invalid_delivery_address_error.go b/internal/services/order_service/internal/orders/exceptions/domain_exceptions/invalid_delivery_address_error.go
index 57ca232e..f459bb3f 100644
--- a/internal/services/order_service/internal/orders/exceptions/domain_exceptions/invalid_delivery_address_error.go
+++ b/internal/services/order_service/internal/orders/exceptions/domain_exceptions/invalid_delivery_address_error.go
@@ -10,7 +10,6 @@ type invalidDeliveryAddressError struct {
 }
 type InvalidDeliveryAddressError interface {
 	customErrors.BadRequestError
-	IsInvalidDeliveryAddressError() bool
 }
 
 func NewInvalidDeliveryAddressError(message string) error {
@@ -23,14 +22,10 @@ func NewInvalidDeliveryAddressError(message string) error {
 	return errors.WithStackIf(br)
 }
 
-func (err *invalidDeliveryAddressError) IsInvalidDeliveryAddressError() bool {
-	return true
-}
-
 func IsInvalidDeliveryAddressError(err error) bool {
 	var ia InvalidDeliveryAddressError
 	if errors.As(err, &ia) {
-		return ia.IsInvalidDeliveryAddressError()
+		return true
 	}
 
 	return false
diff --git a/internal/services/order_service/internal/orders/exceptions/domain_exceptions/invalid_email_error.go b/internal/services/order_service/internal/orders/exceptions/domain_exceptions/invalid_email_error.go
index d08c00ad..132c3ad6 100644
--- a/internal/services/order_service/internal/orders/exceptions/domain_exceptions/invalid_email_error.go
+++ b/internal/services/order_service/internal/orders/exceptions/domain_exceptions/invalid_email_error.go
@@ -11,7 +11,6 @@ type invalidEmailAddressError struct {
 
 type InvalidEmailAddressError interface {
 	customErrors.BadRequestError
-	IsInvalidEmailAddressError() bool
 }
 
 func NewInvalidEmailAddressError(message string) error {
@@ -24,14 +23,10 @@ func NewInvalidEmailAddressError(message string) error {
 	return errors.WithStackIf(br)
 }
 
-func (err *invalidEmailAddressError) IsInvalidEmailAddressError() bool {
-	return true
-}
-
 func IsInvalidEmailAddressError(err error) bool {
 	var ie InvalidEmailAddressError
 	if errors.As(err, &ie) {
-		return ie.IsInvalidEmailAddressError()
+		return true
 	}
 
 	return false
diff --git a/internal/services/order_service/internal/orders/exceptions/domain_exceptions/order_items_required_errors.go b/internal/services/order_service/internal/orders/exceptions/domain_exceptions/order_items_required_errors.go
index 0577383e..435ce22a 100644
--- a/internal/services/order_service/internal/orders/exceptions/domain_exceptions/order_items_required_errors.go
+++ b/internal/services/order_service/internal/orders/exceptions/domain_exceptions/order_items_required_errors.go
@@ -11,7 +11,6 @@ type orderShopItemsRequiredError struct {
 
 type OrderShopItemsRequiredError interface {
 	customErrors.BadRequestError
-	IsOrderShopItemsRequiredError() bool
 }
 
 func NewOrderShopItemsRequiredError(message string) error {
@@ -24,14 +23,10 @@ func NewOrderShopItemsRequiredError(message string) error {
 	return errors.WithStackIf(br)
 }
 
-func (err *orderShopItemsRequiredError) IsOrderShopItemsRequiredError() bool {
-	return true
-}
-
 func IsOrderShopItemsRequiredError(err error) bool {
 	var os OrderShopItemsRequiredError
 	if errors.As(err, &os) {
-		return os.IsOrderShopItemsRequiredError()
+		return true
 	}
 
 	return false
diff --git a/internal/services/order_service/internal/orders/exceptions/domain_exceptions/order_not_found_error.go b/internal/services/order_service/internal/orders/exceptions/domain_exceptions/order_not_found_error.go
index 2db4b754..1e123df7 100644
--- a/internal/services/order_service/internal/orders/exceptions/domain_exceptions/order_not_found_error.go
+++ b/internal/services/order_service/internal/orders/exceptions/domain_exceptions/order_not_found_error.go
@@ -13,7 +13,6 @@ type orderNotFoundError struct {
 
 type OrderNotFoundError interface {
 	customErrors.NotFoundError
-	IsOrderNotFoundError() bool
 }
 
 func NewOrderNotFoundError(id int) error {
@@ -26,14 +25,10 @@ func NewOrderNotFoundError(id int) error {
 	return errors.WithStackIf(br)
 }
 
-func (err *orderNotFoundError) IsOrderNotFoundError() bool {
-	return true
-}
-
 func IsOrderNotFoundError(err error) bool {
 	var os OrderNotFoundError
 	if errors.As(err, &os) {
-		return os.IsOrderNotFoundError()
+		return true
 	}
 
 	return false