diff --git a/sync-service/src/main/java/com/teterialosjuanjos/tfg/sync_service/integration/prestashop/PrestashopClient.java b/sync-service/src/main/java/com/teterialosjuanjos/tfg/sync_service/integration/prestashop/PrestashopClient.java
index f624a0b..54bffa7 100644
--- a/sync-service/src/main/java/com/teterialosjuanjos/tfg/sync_service/integration/prestashop/PrestashopClient.java
+++ b/sync-service/src/main/java/com/teterialosjuanjos/tfg/sync_service/integration/prestashop/PrestashopClient.java
@@ -3,6 +3,7 @@ package com.teterialosjuanjos.tfg.sync_service.integration.prestashop;
 import com.teterialosjuanjos.tfg.sync_service.config.IntegrationProperties;
 import com.teterialosjuanjos.tfg.sync_service.integration.prestashop.dto.*;
 import lombok.extern.slf4j.Slf4j;
+import com.fasterxml.jackson.databind.JsonNode;
 import org.springframework.beans.factory.annotation.Qualifier;
 import org.springframework.http.MediaType;
 import org.springframework.stereotype.Component;
@@ -88,11 +89,16 @@ public class PrestashopClient {
      * Creates a new product in PrestaShop.
      * PS WebService requires XML request body even when {@code output_format=JSON} is set.
      *
-     * @return the created product including its assigned {@code id}
+     * <p>The POST response JSON wraps multilingual fields differently from GET
+     * (e.g. {@code {"language":[...]}} instead of a flat array), so the response
+     * is parsed as a raw {@link JsonNode} and only the assigned {@code id} is extracted.
+     * All other fields are taken from the input DTO.</p>
+     *
+     * @return the created product with its assigned PS {@code id}
      */
     public PrestashopProductDto createProduct(PrestashopProductDto dto) {
         log.debug("Creating PrestaShop product reference={}", dto.reference());
-        PrestashopProductDto.SingleResponse response = restClient.post()
+        JsonNode response = restClient.post()
                 .uri(u -> u.path("/products")
                         .queryParam("ws_key", wsKey)
                         .queryParam("output_format", "JSON")
@@ -100,9 +106,17 @@ public class PrestashopClient {
                 .contentType(MediaType.APPLICATION_XML)
                 .body(toProductXml(dto).getBytes(StandardCharsets.UTF_8))
                 .retrieve()
-                .body(PrestashopProductDto.SingleResponse.class);
+                .body(JsonNode.class);
 
-        return response != null ? response.product() : null;
+        Integer psId = null;
+        if (response != null && response.has("product")) {
+            JsonNode product = response.get("product");
+            if (product.has("id")) {
+                psId = product.get("id").asInt();
+            }
+        }
+        return new PrestashopProductDto(psId, dto.reference(), dto.price(), dto.active(),
+                dto.idCategoryDefault(), dto.name(), dto.description(), dto.descriptionShort());
     }
 
     /** Updates an existing product by its PrestaShop internal ID. */