diff --git a/botalka/src/main/kotlin/ru/vityaman/lms/botalka/app/spring/api/http/endpoint/PromotionHttpApi.kt b/botalka/src/main/kotlin/ru/vityaman/lms/botalka/app/spring/api/http/endpoint/PromotionHttpApi.kt
index b007c3f..bd732c2 100644
--- a/botalka/src/main/kotlin/ru/vityaman/lms/botalka/app/spring/api/http/endpoint/PromotionHttpApi.kt
+++ b/botalka/src/main/kotlin/ru/vityaman/lms/botalka/app/spring/api/http/endpoint/PromotionHttpApi.kt
@@ -4,13 +4,13 @@ import org.springframework.beans.factory.annotation.Autowired
 import org.springframework.http.HttpStatus
 import org.springframework.http.ResponseEntity
 import org.springframework.web.bind.annotation.RestController
-import ru.vityaman.lms.botalka.app.spring.api.http.error.InvalidPromotionRequestStatus
 import ru.vityaman.lms.botalka.app.spring.api.http.message.toMessage
 import ru.vityaman.lms.botalka.app.spring.api.http.message.toModel
 import ru.vityaman.lms.botalka.app.spring.api.http.server.PromotionRequestDraftMessage
 import ru.vityaman.lms.botalka.app.spring.api.http.server.PromotionRequestMessage
 import ru.vityaman.lms.botalka.app.spring.api.http.server.PromotionRequestPatchMessage
 import ru.vityaman.lms.botalka.app.spring.api.http.server.apis.PromotionApi
+import ru.vityaman.lms.botalka.core.exception.InvalidValueException
 import ru.vityaman.lms.botalka.core.logic.PromotionService
 import ru.vityaman.lms.botalka.core.model.PromotionRequest
 import ru.vityaman.lms.botalka.core.model.User
@@ -27,9 +27,9 @@ class PromotionHttpApi(
 
         when (val status = promotionRequestPatchMessage.status.toModel()) {
             PromotionRequest.Status.CREATED -> {
-                throw InvalidPromotionRequestStatus(
+                throw InvalidValueException(
                     buildString {
-                        append("Can't change promotion request status")
+                        append("Can't change promotion request status ")
                         append("to ${status.toMessage()}")
                     },
                 )
diff --git a/botalka/src/main/kotlin/ru/vityaman/lms/botalka/app/spring/api/http/error/DriverExceptionMapping.kt b/botalka/src/main/kotlin/ru/vityaman/lms/botalka/app/spring/api/http/error/DriverExceptionMapping.kt
index c6b4dee..71d73b0 100644
--- a/botalka/src/main/kotlin/ru/vityaman/lms/botalka/app/spring/api/http/error/DriverExceptionMapping.kt
+++ b/botalka/src/main/kotlin/ru/vityaman/lms/botalka/app/spring/api/http/error/DriverExceptionMapping.kt
@@ -1,25 +1,24 @@
 package ru.vityaman.lms.botalka.app.spring.api.http.error
 
-import com.fasterxml.jackson.core.JsonParseException
 import org.springframework.http.HttpStatus
 import org.springframework.http.ResponseEntity
 import org.springframework.web.bind.annotation.ExceptionHandler
 import org.springframework.web.bind.annotation.RestControllerAdvice
+import org.springframework.web.server.ServerWebInputException
 import ru.vityaman.lms.botalka.app.spring.api.http.server.GeneralErrorMessage
 
 @RestControllerAdvice
 class DriverExceptionMapping {
-    @ExceptionHandler(JsonParseException::class)
-    fun handle(exception: JsonParseException): ResponseEntity<Any> {
+    @ExceptionHandler(ServerWebInputException::class)
+    fun handle(exception: ServerWebInputException) = run {
         val code = HttpStatus.BAD_REQUEST
-        val offset = exception.location.offsetDescription()
-        return ResponseEntity
+        ResponseEntity
             .status(code)
             .body(
                 GeneralErrorMessage(
                     code = code.value(),
                     status = code.reasonPhrase,
-                    message = "Json syntax error at $offset",
+                    message = "Input is invalid: ${exception.reason ?: "?"}",
                 ),
             )
     }
diff --git a/botalka/src/main/kotlin/ru/vityaman/lms/botalka/app/spring/api/http/error/InvalidPromotionRequestStatus.kt b/botalka/src/main/kotlin/ru/vityaman/lms/botalka/app/spring/api/http/error/InvalidPromotionRequestStatus.kt
deleted file mode 100644
index 357e5eb..0000000
--- a/botalka/src/main/kotlin/ru/vityaman/lms/botalka/app/spring/api/http/error/InvalidPromotionRequestStatus.kt
+++ /dev/null
@@ -1,4 +0,0 @@
-package ru.vityaman.lms.botalka.app.spring.api.http.error
-
-class InvalidPromotionRequestStatus(message: String) :
-    Exception("Invalid promotion request status: $message")
diff --git a/botalka/src/main/kotlin/ru/vityaman/lms/botalka/core/model/Homework.kt b/botalka/src/main/kotlin/ru/vityaman/lms/botalka/core/model/Homework.kt
index 979d267..bdf7334 100644
--- a/botalka/src/main/kotlin/ru/vityaman/lms/botalka/core/model/Homework.kt
+++ b/botalka/src/main/kotlin/ru/vityaman/lms/botalka/core/model/Homework.kt
@@ -58,7 +58,7 @@ data class Homework(
         }
 
         companion object {
-            private val range = 0..2000
+            private val range = 1..2000
         }
     }
 
@@ -70,6 +70,10 @@ data class Homework(
         val deadlineMoment: OffsetDateTime,
     ) {
         init {
+            val maxDeadline = OffsetDateTime.parse("4096-08-08T08:08:08+03:00")
+            expect(deadlineMoment.isBefore(maxDeadline)) {
+                append("Homework deadline must be before $maxDeadline")
+            }
             expect(publicationMoment.plusMinutes(1).isBefore(deadlineMoment)) {
                 append("Homework must be published 1 minute before deadline")
             }
diff --git a/botalka/src/main/resources/static/openapi/api.yml b/botalka/src/main/resources/static/openapi/api.yml
index 50f3cd8..711fb23 100644
--- a/botalka/src/main/resources/static/openapi/api.yml
+++ b/botalka/src/main/resources/static/openapi/api.yml
@@ -69,6 +69,12 @@ paths:
                 type: array
                 items:
                   $ref: '#/components/schemas/WorkspaceEvent'
+        400:
+          description: Invalid parameters
+          content:
+            application/json:
+              schema:
+                $ref: '#/components/schemas/GeneralError'
         404:
           description: Homework or student with given id not found
           content:
@@ -160,6 +166,12 @@ paths:
             application/json:
               schema:
                 $ref: '#/components/schemas/User'
+        400:
+          description: Invalid parameters
+          content:
+            application/json:
+              schema:
+                $ref: '#/components/schemas/GeneralError'
         404:
           description: Not found
           content:
@@ -218,6 +230,12 @@ paths:
             application/json:
               schema:
                 $ref: '#/components/schemas/PromotionRequest'
+        400:
+          description: Invalid parameters
+          content:
+            application/json:
+              schema:
+                $ref: '#/components/schemas/GeneralError'
         404:
           description: User not found
           content:
@@ -253,6 +271,12 @@ paths:
       responses:
         204:
           description: Promotion request resolved
+        400:
+          description: Invalid parameters
+          content:
+            application/json:
+              schema:
+                $ref: '#/components/schemas/GeneralError'
         404:
           description: Promotion request not found
           content:
diff --git a/docker-compose.yml b/docker-compose.yml
index 0053fdd..b52d819 100644
--- a/docker-compose.yml
+++ b/docker-compose.yml
@@ -44,6 +44,8 @@ services:
       - GF_SECURITY_ADMIN_PASSWORD=0000
     networks:
       - lms-network
+    profiles:
+      - infra
   prometheus:
     container_name: lms-prometheus
     image: prom/prometheus
@@ -53,6 +55,8 @@ services:
       - ./infra/prometheus/prometheus.yml:/etc/prometheus/prometheus.yml
     networks:
       - lms-network
+    profiles:
+      - infra
   restler:
     container_name: lms-restler
     image: restler