diff --git a/CHANGELOG.md b/CHANGELOG.md
index 87d76b6..e98da72 100644
--- a/CHANGELOG.md
+++ b/CHANGELOG.md
@@ -1,131 +1,18 @@
-## Version 1.9.0
+## Version 1.9.1
 
-### Feature
-
-#### account
-- Delete field RecursiveDelete in DeleteUserRequest in cloudapi/account and cloudbroker/account
-- Add field UniqPools in UpdateRequest in cloudapi/account
-- Add field ClearUniqPools in UpdateRequest in cloudbroker/account
-- Add field SortBy in listFlipGroups in cloudapi/account
-- Change Ratio field from required to optional in SetCPUAllocationRatioRequest in cloudbroker/compute
-
-#### audit
-- Add endpoint Get in cloudapi/audit
-- Add endpoint ExportAuditsToFile in cloudbroker/audit
-- Delete field Apitask in model RecordAudit in cloudbroker/audit
-
-#### compute
-- Add support DPDK network net type in NetAttach endpoints in cloudapi/compute and cloudbroker/compute
-- Add field Force in CloneRequest in cloudapi/compute and cloudbroker/compute
-- Change TargetStackID field from required to optional (add default 0 value) in PinToStackRequest in cloudbroker/compute
-- Change return value type from bool to string in SnapshotDelete in cloudbroker/compute and cloudapi/compute
-- Add field StatusCheck in MigrateStorageAbortRequest in cloudbroker/compute
-- Add function SnapshotDeleteAsync in cloudapi/compute and cloudbroker/compute
-- Add field StackID in ListRequest in cloudbroker/compute
-- Add field NodeID in model RecordCompute in cloudbroker/compute
-- Add function SetNetConfig in cloudbroker/compute
-- Add field MTU in model RecordNetAttach in cloudapi/compute and cloudbroker/compute
-- Change Mode field from required to optional in DiskMigrateRequest in cloudapi/compute
-- Add field Chipset in model RecordCompute in cloudapi/compute and cloudbroker/compute
-- Add field BusNumber in model RecordCompute, ItemComputeDisk, ItemDisk, InfoDisk in cloudapi/compute and cloudbroker/compute
-- Add field ImageID in ListRequest in cloudbroker/compute
-- Change Mode field from required to optional in DiskMigrateRequest in cloudbroker/compute
-- Add field Chipset in ListRequest in cloudbroker/compute
-- Add endpoints ChangeIP in cloudapi/compute and cloudbroker/compute
-
-#### disks
-- Change drivers field from optional to required in FromPlatformDiskRequest in cloudapi/disks, cloudbroker/disks
-
-#### dpdknet
-- Add endpoints List, Get in cloudapi/dpdk
-- Add endpoints Create, Delete, Disable Enable, Get, List, Update in cloudbroker/dpdk
-
-#### extnet
-- Change StackId field from required to optional in DeviceMigrateRequest in cloudbroker/extnet
+### Исправлено
 
 #### flipgroup
-- Change ClientIDs field from []uint64 to []string in ListRequest, cloudapi/flipgroup
-
-#### grid
-- Change PasswordLength field from required to optional (add default 9 value) in SetPasswordPolicyRequest in cloudbroker/grid
-- Set Default value (true) in fields Digits and Uppercase in SetPasswordPolicyRequest in cloudbroker/grid
-- Add fields ckey, meta in model RecordGrid in cloudbroker/grid
-- Change GID field from uint64 to string in ExecuteMaintenanceScriptRequest in cloudbroker/grid
-- Add endpoints GetSettings and GetSettingsRaw in cloudbroker/grid
-
-#### group
-- Change StackId field from uint64 to string in ListRequest in cloudbroker/group
-
-#### image:
-- Change Drivers field from required to optional in CreateCDROMImageRequest in cloudbroker/image
-- Add field Enabled in ListRequest in cloudapi/image and cloudbroker/image
-- Delete field GID in SyncCreateRequest in cloudbroker/image
-- Delete field Permanently in DeleteRequest in cloudapi/image and cloudbroker/image
-- Delete field Permanently in DeleteImagesRequest in cloudbroker/image
+| Идентификатор<br>задачи | Описание |
+| --- | --- |
+| BGOS-194 | Изменен тип поля `ClientIDs` c []string на []uint64 в структуре `ListRequest` в cloudapi/flipgroup |
 
 #### k8s
-- Add fields HighlyAvailableLB, AddressVip, ExtnetOnly, WithLB in model RecordK8S in cloudbroker/k8s and cloudapi/k8s
-- Change MasterIds field from a slice of string to a slice of integers in DeleteMasterFromGroupRequest in cloudbroker/k8s and cloudapi/k8s
-- Add field Chipset in WorkerAddRequest, WorkersGroupAddRequest in cloudapi/k8s, cloudbroker/k8s
-- Add field Chipset in CreateRequest in cloudapi/k8s, cloudbroker/k8s
-
-#### kvmx86
-- Add support DPDK network interface in Create endpoints in cloudapi/kvmx86 and cloudbroker/kvmx8
-- Add field Chipset in CreateRequest, CreateBlankRequest, MassCreateRequest, CreateBlankRequest in cloudapi/kvmx86 and cloudbroker/kvmx86
-- Add function MassCreateAsync in cloudbroker/kvmx86
+| Идентификатор<br>задачи | Описание |
+| --- | --- |
+| BGOS-193 | Изменен тип возвращаемых данных метода `WorkersGroupAdd` c uint64, error на string, error в cloudapi/k8s |
 
 #### lb
-- Change ExtNetID field from uint64 to int64 in CreateRequest, ItemLBList, RecordLB in cloudapi/lb, cloudbroker/lb
-- Change ExtNetID, VINSID fields from required to optional in CreateRequest in cloudapi/lb
-
-#### node
-- Add field Force in EnableRequest in cloudbroker/node
-- Add function EnableAsync in cloudbroker/node
-
-#### rg
-- Add endpoints removeDefNet in cloudapi/rg and cloudbroker/rg
-- Add field ClearUniqPools in UpdateRequest in cloudbroker/rg and cloudapi/rg
-- Add field UniqPools in UpdateRequest in cloudapi/rg
-- Delete field IPCIDR in CreateRequest in cloudbroker/rg
-
-#### sep
-- Add endpoints SharedLockStart and SharedLockStop in cloudbroker/sep
-
-#### user
-- Add field GUID in models ItemAudit in cloudapi/user and cloudbroker/user
-- Add fields MaxStatusCode and MinStatusCode in GetAuditRequest in cloudapi/user
-
-#### vins
-- Add field Computes in model ListVINS in cloudbroker/vins
-- Add fields VNFDevId in ListRequest in cloudapi/vins and in ListDeletedRequest in cloudbroker/vins
-- Add field MTU, LibvirtSettings in model ItemInterface in cloudapi/vins and cloudbroker/vins
-- Add field BusNumber in model ItemInterface in cloudapi/vins and cloudbroker/vins
-
-### Removed
-
-#### common
-- The reason field has been deleted everywhere
-
-#### accounts
-- The GetConsumption function was removed in cloudapi/account
-
-#### grid
-- The CheckVMs function was removed in cloudbroker/grid
-- The CreateSystemSpace function was removed in cloudbroker/grid
-
-#### image
-- The Permanently field has been removed from DeleteCDROMImageRequest in cloudbroker/image
-
-#### kvmppc
-- The group has been completely deleted
-
-#### sizes
-- The group has been completely deleted
-
-#### user
-- The StatusCode field has been deleted from GetAuditRequest in cloudapi/user
-
-### Bugfix
-
-#### backup
-- Fixed RestoreDisksFromBackupRequest in cloudbroker/backup
+| Идентификатор<br>задачи | Описание |
+| --- | --- |
+| BGOS-194 | Исправлена валидация полей `ExtNetID` и `VINSID` в структурах `CreateRequest` в cloudapi/lb и cloudbroker/lb |
\ No newline at end of file
diff --git a/internal/validators/custom.go b/internal/validators/custom.go
index 406d4c6..4e2141c 100644
--- a/internal/validators/custom.go
+++ b/internal/validators/custom.go
@@ -372,6 +372,13 @@ func urlValidartor(fl validator.FieldLevel) bool {
 	return err == nil
 }
 
+func chipsetValidator(fe validator.FieldLevel) bool {
+	fieldValue := fe.Field().String()
+	fieldValue = strings.ToLower(fieldValue)
+
+	return IsInSlice(fieldValue, chipsetValues)
+}
+
 // ValidateRAM checks if request contains RAM value that is positive integer divisible by divisibility passed.
 // It is recommended to pass constants.RAM_DIVISIBILITY as divisility arguement
 func ValidateRAM(r interfaces.RequestWithRAM, divisibility uint64) error {
diff --git a/internal/validators/messages.go b/internal/validators/messages.go
index aa18412..72b4100 100644
--- a/internal/validators/messages.go
+++ b/internal/validators/messages.go
@@ -299,6 +299,12 @@ func errorMessage(fe validator.FieldError) string {
 			prefix,
 			fe.Field(),
 			joinValues(kvmx86NetTypeValues))
+
+	case "chipset":
+		return fmt.Sprintf("%s %s must be one of the following: %s",
+			prefix,
+			fe.Field(),
+			joinValues(chipsetValues))
 	}
 
 	return fe.Error()
diff --git a/internal/validators/validator.go b/internal/validators/validator.go
index 832f435..829eb95 100644
--- a/internal/validators/validator.go
+++ b/internal/validators/validator.go
@@ -256,5 +256,10 @@ func registerAllValidators(validate *validator.Validate) error {
 		return err
 	}
 
+	err = validate.RegisterValidation("chipset", chipsetValidator)
+	if err != nil {
+		return err
+	}
+
 	return nil
 }
diff --git a/internal/validators/values.go b/internal/validators/values.go
index caf43aa..219fd52 100644
--- a/internal/validators/values.go
+++ b/internal/validators/values.go
@@ -62,6 +62,8 @@ var (
 	ioEventFDValues = []string{"on", "off", "selected by hypervisor"}
 
 	eventIDxValues = []string{"on", "off", "selected by hypervisor"}
+
+	chipsetValues = []string{"i440fx", "Q35"}
 )
 
 const (
diff --git a/pkg/cloudapi/compute/update.go b/pkg/cloudapi/compute/update.go
index f4296e7..aca9b29 100644
--- a/pkg/cloudapi/compute/update.go
+++ b/pkg/cloudapi/compute/update.go
@@ -37,7 +37,7 @@ type UpdateRequest struct {
 
 	// Type of the emulated system, Q35 or i440fx
 	// Required: false
-	Chipset string `url:"chipset,omitempty" json:"chipset,omitempty"`
+	Chipset string `url:"chipset,omitempty" json:"chipset,omitempty" validate:"omitempty,chipset"`
 
 	// Use Huge Pages to allocate RAM of the virtual machine. The system must be pre-configured by allocating Huge Pages on the physical node
 	// Required: false
diff --git a/pkg/cloudapi/flipgroup/list.go b/pkg/cloudapi/flipgroup/list.go
index e9e1c5e..f248a88 100644
--- a/pkg/cloudapi/flipgroup/list.go
+++ b/pkg/cloudapi/flipgroup/list.go
@@ -44,7 +44,7 @@ type ListRequest struct {
 
 	// Find by list of clientIds
 	// Required: false
-	ClientIDs []string `url:"clientIds,omitempty" json:"clientIds,omitempty"`
+	ClientIDs []uint64 `url:"clientIds,omitempty" json:"clientIds,omitempty"`
 
 	// Page number
 	// Required: false
diff --git a/pkg/cloudapi/k8s/create.go b/pkg/cloudapi/k8s/create.go
index 830d2cc..f110c15 100644
--- a/pkg/cloudapi/k8s/create.go
+++ b/pkg/cloudapi/k8s/create.go
@@ -165,7 +165,7 @@ type CreateRequest struct {
 
 	// Type of the emulated system, Q35 or i440fx
 	// Required: false
-	Chipset string `url:"chipset,omitempty" json:"chipset,omitempty"`
+	Chipset string `url:"chipset,omitempty" json:"chipset,omitempty" validate:"omitempty,chipset"`
 }
 
 // GetRAM returns RAM field values
diff --git a/pkg/cloudapi/k8s/worker_add.go b/pkg/cloudapi/k8s/worker_add.go
index 0849583..636c564 100644
--- a/pkg/cloudapi/k8s/worker_add.go
+++ b/pkg/cloudapi/k8s/worker_add.go
@@ -24,7 +24,7 @@ type WorkerAddRequest struct {
 
 	// Type of the emulated system, Q35 or i440fx
 	// Required: false
-	Chipset string `url:"chipset,omitempty" json:"chipset,omitempty"`
+	Chipset string `url:"chipset,omitempty" json:"chipset,omitempty" validate:"omitempty,chipset"`
 }
 
 // WorkerAdd adds worker nodes to a Kubernetes cluster
diff --git a/pkg/cloudapi/k8s/workers_group_add.go b/pkg/cloudapi/k8s/workers_group_add.go
index 97570c7..79f6245 100644
--- a/pkg/cloudapi/k8s/workers_group_add.go
+++ b/pkg/cloudapi/k8s/workers_group_add.go
@@ -3,7 +3,6 @@ package k8s
 import (
 	"context"
 	"net/http"
-	"strconv"
 
 	"repository.basistech.ru/BASIS/decort-golang-sdk/internal/validators"
 )
@@ -63,7 +62,7 @@ type WorkersGroupAddRequest struct {
 
 	// Type of the emulated system, Q35 or i440fx
 	// Required: false
-	Chipset string `url:"chipset,omitempty" json:"chipset,omitempty"`
+	Chipset string `url:"chipset,omitempty" json:"chipset,omitempty" validate:"omitempty,chipset"`
 }
 
 // GetRAM returns RAM field values
@@ -77,23 +76,18 @@ func (r WorkersGroupAddRequest) GetRAM() map[string]uint64 {
 }
 
 // WorkersGroupAdd adds workers group to Kubernetes cluster
-func (k8s K8S) WorkersGroupAdd(ctx context.Context, req WorkersGroupAddRequest) (uint64, error) {
+func (k8s K8S) WorkersGroupAdd(ctx context.Context, req WorkersGroupAddRequest) (string, error) {
 	err := validators.ValidateRequest(req)
 	if err != nil {
-		return 0, validators.ValidationErrors(validators.GetErrors(err))
+		return "", validators.ValidationErrors(validators.GetErrors(err))
 	}
 
 	url := "/cloudapi/k8s/workersGroupAdd"
 
 	res, err := k8s.client.DecortApiCall(ctx, http.MethodPost, url, req)
 	if err != nil {
-		return 0, err
+		return "", err
 	}
 
-	result, err := strconv.ParseUint(string(res), 10, 64)
-	if err != nil {
-		return 0, err
-	}
-
-	return result, nil
+	return string(res), nil
 }
diff --git a/pkg/cloudapi/kvmx86/create.go b/pkg/cloudapi/kvmx86/create.go
index 47fb460..df54d50 100644
--- a/pkg/cloudapi/kvmx86/create.go
+++ b/pkg/cloudapi/kvmx86/create.go
@@ -153,7 +153,7 @@ type CreateRequest struct {
 
 	// Type of the emulated system, Q35 or i440fx
 	// Required: false
-	Chipset string `url:"chipset,omitempty" json:"chipset,omitempty"`
+	Chipset string `url:"chipset,omitempty" json:"chipset,omitempty" validate:"omitempty,chipset"`
 
 	// Use Huge Pages to allocate RAM of the virtual machine. The system must be pre-configured by allocating Huge Pages on the physical node
 	// Required: false
diff --git a/pkg/cloudapi/kvmx86/create_blank.go b/pkg/cloudapi/kvmx86/create_blank.go
index 5b59aba..b02c69d 100644
--- a/pkg/cloudapi/kvmx86/create_blank.go
+++ b/pkg/cloudapi/kvmx86/create_blank.go
@@ -63,7 +63,7 @@ type CreateBlankRequest struct {
 
 	// Type of the emulated system, Q35 or i440fx
 	// Required: false
-	Chipset string `url:"chipset,omitempty" json:"chipset,omitempty"`
+	Chipset string `url:"chipset,omitempty" json:"chipset,omitempty" validate:"omitempty,chipset"`
 
 	// Text description of this VM
 	// Required: false
diff --git a/pkg/cloudapi/lb/create.go b/pkg/cloudapi/lb/create.go
index 996efc4..f469776 100644
--- a/pkg/cloudapi/lb/create.go
+++ b/pkg/cloudapi/lb/create.go
@@ -22,12 +22,12 @@ type CreateRequest struct {
 	Name string `url:"name" json:"name" validate:"required"`
 
 	// External network to connect this load balancer to
-	// Required: true
-	ExtNetID uint64 `url:"extnetId" json:"extnetId" validate:"required"`
+	// Required: true, can be 0
+	ExtNetID uint64 `url:"extnetId" json:"extnetId"`
 
 	// Internal network (VINS) to connect this load balancer to
-	// Required: true
-	VINSID uint64 `url:"vinsId" json:"vinsId" validate:"required"`
+	// Required: true, can be 0
+	VINSID uint64 `url:"vinsId" json:"vinsId"`
 
 	// Custom  sysctl values for Load Balancer instance. Applied on boot
 	// Required: false
diff --git a/pkg/cloudbroker/compute/update.go b/pkg/cloudbroker/compute/update.go
index cda1215..8c659c1 100644
--- a/pkg/cloudbroker/compute/update.go
+++ b/pkg/cloudbroker/compute/update.go
@@ -37,7 +37,7 @@ type UpdateRequest struct {
 
 	// Type of the emulated system, Q35 or i440fx
 	// Required: false
-	Chipset string `url:"chipset,omitempty" json:"chipset,omitempty"`
+	Chipset string `url:"chipset,omitempty" json:"chipset,omitempty" validate:"omitempty,chipset"`
 
 	// Use Huge Pages to allocate RAM of the virtual machine. The system must be pre-configured by allocating Huge Pages on the physical node
 	// Required: false
diff --git a/pkg/cloudbroker/k8s/create.go b/pkg/cloudbroker/k8s/create.go
index 30f718b..0a44290 100644
--- a/pkg/cloudbroker/k8s/create.go
+++ b/pkg/cloudbroker/k8s/create.go
@@ -167,7 +167,7 @@ type CreateRequest struct {
 
 	// Type of the emulated system, Q35 or i440fx
 	// Required: false
-	Chipset string `url:"chipset,omitempty" json:"chipset,omitempty"`
+	Chipset string `url:"chipset,omitempty" json:"chipset,omitempty" validate:"omitempty,chipset"`
 }
 
 // GetRAM returns RAM values
diff --git a/pkg/cloudbroker/k8s/worker_add.go b/pkg/cloudbroker/k8s/worker_add.go
index 925fcda..3dbc2a5 100644
--- a/pkg/cloudbroker/k8s/worker_add.go
+++ b/pkg/cloudbroker/k8s/worker_add.go
@@ -24,7 +24,7 @@ type WorkerAddRequest struct {
 
 	// Type of the emulated system, Q35 or i440fx
 	// Required: false
-	Chipset string `url:"chipset,omitempty" json:"chipset,omitempty"`
+	Chipset string `url:"chipset,omitempty" json:"chipset,omitempty" validate:"omitempty,chipset"`
 }
 
 // WorkerAdd adds worker nodes to a kubernetes cluster
diff --git a/pkg/cloudbroker/k8s/workers_group_add.go b/pkg/cloudbroker/k8s/workers_group_add.go
index 39a468e..3fad133 100644
--- a/pkg/cloudbroker/k8s/workers_group_add.go
+++ b/pkg/cloudbroker/k8s/workers_group_add.go
@@ -65,7 +65,7 @@ type WorkersGroupAddRequest struct {
 
 	// Type of the emulated system, Q35 or i440fx
 	// Required: false
-	Chipset string `url:"chipset,omitempty" json:"chipset,omitempty"`
+	Chipset string `url:"chipset,omitempty" json:"chipset,omitempty" validate:"omitempty,chipset"`
 }
 
 // GetRAM returns RAM field values
diff --git a/pkg/cloudbroker/kvmx86/create.go b/pkg/cloudbroker/kvmx86/create.go
index 899b320..add6a53 100644
--- a/pkg/cloudbroker/kvmx86/create.go
+++ b/pkg/cloudbroker/kvmx86/create.go
@@ -157,7 +157,7 @@ type CreateRequest struct {
 
 	// Type of the emulated system, Q35 or i440fx
 	// Required: false
-	Chipset string `url:"chipset,omitempty" json:"chipset,omitempty"`
+	Chipset string `url:"chipset,omitempty" json:"chipset,omitempty" validate:"omitempty,chipset"`
 
 	// Use Huge Pages to allocate RAM of the virtual machine. The system must be pre-configured by allocating Huge Pages on the physical node
 	// Required: false
diff --git a/pkg/cloudbroker/kvmx86/create_blank.go b/pkg/cloudbroker/kvmx86/create_blank.go
index cc4039f..648443a 100644
--- a/pkg/cloudbroker/kvmx86/create_blank.go
+++ b/pkg/cloudbroker/kvmx86/create_blank.go
@@ -67,7 +67,7 @@ type CreateBlankRequest struct {
 
 	// Type of the emulated system, Q35 or i440fx
 	// Required: false
-	Chipset string `url:"chipset,omitempty" json:"chipset,omitempty"`
+	Chipset string `url:"chipset,omitempty" json:"chipset,omitempty" validate:"omitempty,chipset"`
 }
 
 // GetRAM returns RAM field values
diff --git a/pkg/cloudbroker/kvmx86/mass_create.go b/pkg/cloudbroker/kvmx86/mass_create.go
index f496cbf..2fddda5 100644
--- a/pkg/cloudbroker/kvmx86/mass_create.go
+++ b/pkg/cloudbroker/kvmx86/mass_create.go
@@ -78,7 +78,7 @@ type MassCreateRequest struct {
 
 	// Type of the emulated system, Q35 or i440fx
 	// Required: false
-	Chipset string `url:"chipset,omitempty" json:"chipset,omitempty"`
+	Chipset string `url:"chipset,omitempty" json:"chipset,omitempty" validate:"omitempty,chipset"`
 }
 
 type asyncWrapperMassCreateRequest struct {
diff --git a/pkg/cloudbroker/lb/create.go b/pkg/cloudbroker/lb/create.go
index 57596f2..046652a 100644
--- a/pkg/cloudbroker/lb/create.go
+++ b/pkg/cloudbroker/lb/create.go
@@ -22,12 +22,12 @@ type CreateRequest struct {
 	Name string `url:"name" json:"name" validate:"required"`
 
 	// External network to connect this load balancer to
-	// Required: true
-	ExtNetID int64 `url:"extnetId" json:"extnetId" validate:"required"`
+	// Required: true, can be 0
+	ExtNetID int64 `url:"extnetId" json:"extnetId"`
 
 	// Internal network (VINS) to connect this load balancer to
-	// Required: true
-	VINSID uint64 `url:"vinsId" json:"vinsId" validate:"required"`
+	// Required: true, can be 0
+	VINSID uint64 `url:"vinsId" json:"vinsId"`
 
 	// Start now Load balancer
 	// Required: true