diff --git a/src/app/actions/auth.ts b/src/app/actions/auth.ts
index f9a3240..a72c6b3 100644
--- a/src/app/actions/auth.ts
+++ b/src/app/actions/auth.ts
@@ -1,6 +1,6 @@
 'use server'
 
-import {SignupFormSchema, loginFormSchema, localDevelopmentUrl} from '@/app/lib/definitions';
+import { SignupFormSchema, loginFormSchema, localDevelopmentUrl } from '@/app/lib/definitions';
 import { createSession, deleteSession, getSessionData } from '@/app/lib/session';
 import { redirect } from 'next/navigation';
 
@@ -29,16 +29,41 @@ export async function logout() {
 }
 
 export async function authorization(
-	state: string | undefined,
+	state: {
+		previousState: {
+			email: string;
+		}
+		error: Record<string, string>
+	} | undefined,
 	formData: FormData,
 ) {
+	const email = formData.get('email') as string || '';
+	const password = formData.get('password');
+
 	const validatedFields = loginFormSchema.safeParse({
-		email: formData.get('email'),
-		password: formData.get('password'),
+		email,
+		password
 	})
 
 	if (!validatedFields.success) {
-		return 'error';
+		const errors: Record<string, string> = {}
+		JSON.parse(validatedFields.error.message).forEach((obj: {
+			message: string,
+			path: string
+		}) => {
+			if (errors[obj.path[0]]) {
+				errors[obj.path[0]] = `${errors[obj.path[0]]} ${obj.message}`;
+			} else {
+				errors[obj.path[0]] = obj.message;
+			}
+		});
+
+		return {
+			previousState: {
+				email
+			},
+			error: errors
+		};
 	}
 
 	try {
@@ -58,12 +83,21 @@ export async function authorization(
 			let parsed = await response.json();
 			await createSession(parsed.token, parsed.email);
 		} else {
-			throw new Error('Something went wrong. from server');
+			throw new Error(`Something went wrong. Status from server ${response.status}`);
 		}
 
 	} catch (error) {
+		const errors: Record<string, string> = {}
+		errors['server'] = `${error}`;
+
 		if (error) {
-			return 'Something went wrong. from server';
+			return {
+				previousState: {
+					email,
+					password
+				},
+				error: errors
+			};
 		}
 		throw error;
 	}
@@ -71,16 +105,35 @@ export async function authorization(
 	redirect('/pages/dashboard');
 }
 
+type FormState = {
+	previousState: {
+		full_name: string;
+		email: string;
+		password: string;
+		confirm_password: string;
+		phone: string;
+		company: string;
+	}
+	error: Record<string, string>
+};
+
 export async function registration(
-	state: Record<string, string> | undefined,
+	state: FormState | undefined,
 	formData: FormData,
-) {
+): Promise<FormState> {
+	const full_name = formData.get('full_name') as string || '';
+	const email = formData.get('email') as string || '';
+	const password = formData.get('password') as string || '';
+	const confirm_password = formData.get('confirm_password') as string || '';
+	const phone = formData.get('phone') as string || '';
+	const company = formData.get('company') as string || '';
+
 	const validatedFields = SignupFormSchema.safeParse({
-		full_name: formData.get('full_name'),
-		email: formData.get('email'),
-		password: formData.get('password'),
-		confirm_password: formData.get('confirm_password'),
-	})
+		full_name,
+		email,
+		password,
+		confirm_password,
+	});
 
 	if (!validatedFields.success) {
 		const errors: Record<string, string> = {}
@@ -95,14 +148,24 @@ export async function registration(
 			}
 		});
 
-		return errors;
+		return {
+			previousState: {
+				full_name,
+				email,
+				password,
+				confirm_password,
+				phone,
+				company
+			},
+			error: errors
+		};
 	}
 
 	try {
 		const { full_name, email, password } = validatedFields.data;
 		const response = await fetch(`${API_BASE_URL}/v1/api/auth/register`, {
 			method: 'POST',
-			body: JSON.stringify({ fullName: full_name, email, password }),
+			body: JSON.stringify({ fullName: full_name, email, password, phone, company }),
 			headers: {
 				"Content-Type": "application/json",
 				"Accept": "application/json"
@@ -121,7 +184,18 @@ export async function registration(
 		if (error) {
 			const errors: Record<string, string> = {}
 			errors['server'] = `-error-2 -> ${error}`
-			return errors;
+
+			return {
+				previousState: {
+					full_name,
+					email,
+					password,
+					confirm_password,
+					phone,
+					company
+				},
+				error: errors
+			};
 		}
 		throw error;
 	}
diff --git a/src/app/lib/definitions.ts b/src/app/lib/definitions.ts
index be6d944..7a00ff4 100644
--- a/src/app/lib/definitions.ts
+++ b/src/app/lib/definitions.ts
@@ -20,20 +20,20 @@ export const SignupFormSchema = z
 	.object({
 		full_name: z
 			.string()
-			.min(3, { error: 'Name must be at least 3 characters long.' })
+			.min(3, { error: 'Имя должно содержать не менее 3 символов.' })
 			.trim(),
-		email: z.email({ error: 'Please enter a valid email.' }).trim(),
+		email: z.email({ error: 'Пожалуйста, введите правильный адрес электронной почты.' }).trim(),
 		password: z
 			.string()
-			.min(8, { error: 'Be at least 8 characters long' })
-			.regex(/[a-zA-Z]/, { error: 'Contain at least one letter.' })
-			.regex(/[0-9]/, { error: 'Contain at least one number.' })
+			.min(8, { error: 'Длина пароля должна быть не менее 8 символов.' })
+			.regex(/[a-zA-Z]/, { error: 'Пароль должен содержать хотя бы одну букву.' })
+			.regex(/[0-9]/, { error: 'Пароль должен содержать хотя бы одну цифру.' })
 			.trim(),
 		confirm_password: z
 			.string()
 	})
 	.refine((data) => data.password === data.confirm_password, {
-		message: 'passwordMismatchErrorMessage',
+		message: 'Повторите пароль',
 		path: ['confirm_password'],
 	});
 
@@ -41,11 +41,11 @@ export const loginFormSchema = z
 	.object({
 		email: z
 			.string()
-			.min(1, { error: 'Email must be not empty' })
+			.min(1, { error: 'Адрес электронной почты не должен быть пустым' })
 			.trim(),
 		password: z
 			.string()
-			.min(1, { error: 'Password must be not empty' })
+			.min(1, { error: 'Пароль не должен быть пустым' })
 			.trim(),
 	})
 
diff --git a/src/app/ui/login-form.tsx b/src/app/ui/login-form.tsx
index 74e6191..4520894 100644
--- a/src/app/ui/login-form.tsx
+++ b/src/app/ui/login-form.tsx
@@ -5,7 +5,7 @@ import { useActionState } from 'react';
 import { authorization } from '@/app/actions/auth';
 
 export default function LoginForm() {
-	const [errorMessage, formAction, isPending] = useActionState(
+	const [state, formAction, isPending] = useActionState(
 		authorization,
 		undefined,
 	);
@@ -14,14 +14,33 @@ export default function LoginForm() {
 		<form action={formAction}>
 			<div className={`${styles['form-group']}`}>
 				<label className={`${styles['form-label']}`}>Email адрес</label>
-				<input type="readOnly" id="email" name="email" className={`${styles['form-input']}`} placeholder="Введите ваш email" />
+				<input
+					type="readOnly"
+					id="email"
+					name="email"
+					className={`${styles['form-input']}`}
+					placeholder="Введите ваш email"
+					defaultValue={state?.previousState?.email ? state?.previousState?.email : ''}
+				/>
+				{state?.error?.email && (
+					<p className="text-sm text-red-500">{state?.error?.email}</p>
+				)}
 			</div>
 			<div className={`${styles['form-group']}`}>
 				<label className={`${styles['form-label']}`}>Пароль</label>
-				<input type="password" id="password" name="password" className={`${styles['form-input']}`} placeholder="Введите пароль" />
+				<input
+					type="password"
+					id="password"
+					name="password"
+					className={`${styles['form-input']}`}
+					placeholder="Введите пароль"
+				/>
+				{state?.error?.password && (
+					<p className="text-sm text-red-500">{state?.error?.password}</p>
+				)}
 			</div>
-			{errorMessage && (
-				<p className="text-sm text-red-500">{errorMessage}</p>
+			{state?.error.server && (
+				<p className="text-sm text-red-500">{state?.error.server}</p>
 			)}
 			<div className={`${styles['form-options']}`}>
 				<div className={`${styles['form-checkbox']}`}>
diff --git a/src/app/ui/register-form.tsx b/src/app/ui/register-form.tsx
index 7d2a9d6..7a8d37e 100644
--- a/src/app/ui/register-form.tsx
+++ b/src/app/ui/register-form.tsx
@@ -1,19 +1,15 @@
 'use client'
 
 import styles from '@/app/styles/login.module.scss';
-import { useActionState, useEffect } from 'react';
+import { useActionState } from 'react';
 import { registration } from '@/app/actions/auth';
 
 export default function RegisterForm() {
-	const [errorMessage, formAction, isPending] = useActionState(
+	const [state, formAction, isPending] = useActionState(
 		registration,
 		undefined,
 	);
 
-	useEffect(() => {
-		console.log(errorMessage);
-	}, [errorMessage])
-
 	return (
 		<form action={(e) => {
 			formAction(e);
@@ -24,22 +20,43 @@ export default function RegisterForm() {
 				>
 					Полное имя
 				</label>
-				<input type="text" id="full_name" name="full_name" className={`${styles['form-input']}`} placeholder="Иванов Иван Иванович" />
-				{errorMessage?.full_name && (
-					<p className="text-sm text-red-500">{errorMessage!.full_name}</p>
+				<input
+					type="text"
+					id="full_name"
+					name="full_name"
+					className={`${styles['form-input']}`}
+					placeholder="Иванов Иван Иванович"
+					defaultValue={state?.previousState?.full_name ? state?.previousState?.full_name : ''}
+				/>
+				{state?.error?.full_name && (
+					<p className="text-sm text-red-500">{state?.error?.full_name}</p>
 				)}
 			</div>
 			<div className={`${styles['form-row']}`}>
 				<div className={`${styles['form-group']}`}>
 					<label className={`${styles['form-label']} ${styles['required']}`}>Email адрес</label>
-					<input type="text" id="email" name="email" className={`${styles['form-input']}`} placeholder="ivan@example.com" />
-					{errorMessage?.email && (
-						<p className="text-sm text-red-500">{errorMessage!.email}</p>
+					<input
+						type="text"
+						id="email"
+						name="email"
+						className={`${styles['form-input']}`}
+						placeholder="ivan@example.com"
+						defaultValue={state?.previousState?.email ? state?.previousState?.email : ''}
+					/>
+					{state?.error?.email && (
+						<p className="text-sm text-red-500">{state?.error?.email}</p>
 					)}
 				</div>
 				<div className={`${styles['form-group']}`}>
 					<label className={`${styles['form-label']}`}>Телефон</label>
-					<input type="phone" id="phone" name="phone" className={`${styles['form-input']}`} placeholder="+7 (999) 123-45-67" />
+					<input
+						type="phone"
+						id="phone"
+						name="phone"
+						className={`${styles['form-input']}`}
+						placeholder="+7 (999) 123-45-67"
+						defaultValue={state?.previousState?.phone ? state?.previousState?.phone : ''}
+					/>
 				</div>
 			</div>
 			<div className={`${styles['form-group']}`}>
@@ -48,21 +65,41 @@ export default function RegisterForm() {
 				>
 					Компания
 				</label>
-				<input type="text" id="company" name="company" className={`${styles['form-input']}`} placeholder="ООО «Ваша компания»" />
+				<input
+					type="text"
+					id="company"
+					name="company"
+					className={`${styles['form-input']}`}
+					placeholder="ООО «Ваша компания»"
+					defaultValue={state?.previousState?.company ? state?.previousState?.company : ''}
+				/>
 			</div>
 			<div className={`${styles['form-row']}`}>
 				<div className={`${styles['form-group']}`}>
 					<label className={`${styles['form-label']} ${styles['required']}`}>Пароль</label>
-					<input type="password" id="password" name="password" className={`${styles['form-input']}`} placeholder="Минимум 6 символов" />
-					{errorMessage?.password && (
-						<p className="text-sm text-red-500">{errorMessage!.password}</p>
+					<input
+						type="password"
+						id="password" name="password"
+						className={`${styles['form-input']}`}
+						placeholder="Минимум 8 символов"
+						defaultValue={state?.previousState?.password ? state?.previousState?.password : ''}
+					/>
+					{state?.error?.password && (
+						<p className="text-sm text-red-500">{state?.error?.password}</p>
 					)}
 				</div>
 				<div className={`${styles['form-group']}`}>
 					<label className={`${styles['form-label']} ${styles['required']}`}>Подтвердите пароль</label>
-					<input type="password" id="confirm_password" name="confirm_password" className={`${styles['form-input']}`} placeholder="Повторите пароль" />
-					{errorMessage?.confirm_password && (
-						<p className="text-sm text-red-500">{errorMessage!.confirm_password}</p>
+					<input
+						type="password"
+						id="confirm_password"
+						name="confirm_password"
+						className={`${styles['form-input']}`}
+						placeholder="Повторите пароль"
+						defaultValue={state?.previousState?.confirm_password ? state?.previousState?.confirm_password : ''}
+					/>
+					{state?.error?.confirm_password && (
+						<p className="text-sm text-red-500">{state?.error?.confirm_password}</p>
 					)}
 				</div>
 			</div>