diff --git a/.gitignore b/.gitignore
index dcb6c75..6e9e444 100644
--- a/.gitignore
+++ b/.gitignore
@@ -46,4 +46,5 @@ bin/
 
 .idea/*
 .env
-data/*
\ No newline at end of file
+data/*
+testSuite/*
\ No newline at end of file
diff --git a/src/main/kotlin/org/octopus/internal/services/EntryService.kt b/src/main/kotlin/org/octopus/internal/services/EntryService.kt
index f6416fc..e2e0043 100755
--- a/src/main/kotlin/org/octopus/internal/services/EntryService.kt
+++ b/src/main/kotlin/org/octopus/internal/services/EntryService.kt
@@ -4,6 +4,6 @@ import org.octopus.internal.common.models.Entry
 import org.octopus.internal.web.utils.dtos.EntryDto
 
 interface EntryService {
-    fun createEntry(entry: EntryDto)
+    fun createEntry(entry: EntryDto): Entry
     fun getAllEntries(): MutableList<Entry>
 }
\ No newline at end of file
diff --git a/src/main/kotlin/org/octopus/internal/services/impl/EntryServiceImpl.kt b/src/main/kotlin/org/octopus/internal/services/impl/EntryServiceImpl.kt
index 6511374..ef168a9 100755
--- a/src/main/kotlin/org/octopus/internal/services/impl/EntryServiceImpl.kt
+++ b/src/main/kotlin/org/octopus/internal/services/impl/EntryServiceImpl.kt
@@ -1,20 +1,47 @@
 package org.octopus.internal.services.impl
 
+import org.octopus.internal.common.enums.EBusinessException
 import org.octopus.internal.common.enums.EEntryType
+import org.octopus.internal.common.exceptions.OctopusPlanningException
 import org.octopus.internal.common.models.Entry
 import org.octopus.internal.repositories.EntryRepository
 import org.octopus.internal.services.EntryService
 import org.octopus.internal.web.utils.dtos.EntryDto
 import org.springframework.stereotype.Service
+import java.time.Month
 
 @Service
 class EntryServiceImpl(val repo: EntryRepository) : EntryService {
-    override fun createEntry(entry: EntryDto) {
-        TODO("Not yet implemented")
+    override fun createEntry(entry: EntryDto): Entry {
+        if (!verifyDto(entry)) {
+            throw OctopusPlanningException.create(EBusinessException.INVALID_REQUEST, entry, "Entry must be either recurring or fixed.")
+        }
+
+        return repo.createEntry(Entry(
+            id = 0L,
+            type = EEntryType.valueOf(entry.type),
+            amount = entry.amount,
+            fixedDate = entry.fixedDate,
+            endDate = entry.endDate,
+            recurrent = entry.recurrent,
+            recurrentMonths = entry.recurrentMonths?.map { m -> Month.of(m) }
+        ))
     }
 
     override fun getAllEntries(): MutableList<Entry> {
         TODO("Not yet implemented")
     }
 
+    private fun verifyDto(entry: EntryDto): Boolean {
+        val eventIsRecurring = entry.fixedDate == null &&
+                entry.endDate != null &&
+                entry.recurrent == true &&
+                entry.recurrentMonths?.isNotEmpty() ?: false
+        val eventIsFixed = entry.fixedDate != null &&
+                entry.endDate == null &&
+                entry.recurrent != true &&
+                entry.recurrentMonths?.isEmpty() ?: true
+        return eventIsRecurring || eventIsFixed
+    }
+
 }
\ No newline at end of file
diff --git a/src/main/kotlin/org/octopus/internal/web/controllers/EntryController.kt b/src/main/kotlin/org/octopus/internal/web/controllers/EntryController.kt
index 5d36a6e..c853c3d 100755
--- a/src/main/kotlin/org/octopus/internal/web/controllers/EntryController.kt
+++ b/src/main/kotlin/org/octopus/internal/web/controllers/EntryController.kt
@@ -1,9 +1,12 @@
 package org.octopus.internal.web.controllers
 
+import jakarta.validation.Valid
 import lombok.AllArgsConstructor
 import org.octopus.internal.common.models.Entry
 import org.octopus.internal.services.EntryService
+import org.octopus.internal.web.utils.dtos.EntryDto
 import org.octopus.internal.web.utils.responses.WebResponse
+import org.springframework.boot.actuate.autoconfigure.metrics.MetricsProperties.Web
 import org.springframework.web.bind.annotation.*
 
 @RestController
@@ -13,6 +16,13 @@ class EntryController(
     val entryService: EntryService
 ) {
 
+    @PostMapping
+    fun createEntry(
+        @Valid @RequestBody entryDto: EntryDto
+    ): WebResponse<Entry> {
+        return WebResponse.ok(entryService.createEntry(entryDto))
+    }
+
     @GetMapping
     fun getAllClients(): WebResponse<List<Entry>> {
         return WebResponse.ok(entryService.getAllEntries())
diff --git a/src/main/kotlin/org/octopus/internal/web/utils/BaseAdvice.kt b/src/main/kotlin/org/octopus/internal/web/utils/BaseAdvice.kt
index 19d6228..74a73ab 100755
--- a/src/main/kotlin/org/octopus/internal/web/utils/BaseAdvice.kt
+++ b/src/main/kotlin/org/octopus/internal/web/utils/BaseAdvice.kt
@@ -95,8 +95,7 @@ class BaseAdvice {
     ): WebResponse<Unit> {
         return WebResponse.ko(
             HttpStatus.NOT_ACCEPTABLE,
-            "${HttpStatus.NOT_ACCEPTABLE.reasonPhrase}: JSON parse error"
-
+            "${HttpStatus.NOT_ACCEPTABLE.reasonPhrase}: JSON parse error. Please verify the body has the correct format.",
         )
     }
 
diff --git a/src/main/kotlin/org/octopus/internal/web/utils/dtos/EntryDto.kt b/src/main/kotlin/org/octopus/internal/web/utils/dtos/EntryDto.kt
index 198b3ed..13cd292 100755
--- a/src/main/kotlin/org/octopus/internal/web/utils/dtos/EntryDto.kt
+++ b/src/main/kotlin/org/octopus/internal/web/utils/dtos/EntryDto.kt
@@ -1,5 +1,6 @@
 package org.octopus.internal.web.utils.dtos
 
+import jakarta.validation.constraints.DecimalMin
 import org.octopus.internal.web.utils.dtos.validators.EntryMonthValidator
 import org.octopus.internal.web.utils.dtos.validators.EntryTypeValidator
 import java.util.Date
@@ -7,6 +8,7 @@ import java.util.Date
 data class EntryDto(
     @field:EntryTypeValidator.Validate
     val type: String,
+    @field:DecimalMin(value="0.00", inclusive = false, message = "Amount value cannot be lower than 0.01")
     val amount: Double,
     val fixedDate: Date?,
     val recurrent: Boolean?,