diff --git a/scoap3/articles/tests/test_article_views.py b/scoap3/articles/tests/test_article_views.py
index cad85a4a2..abe70e1c4 100644
--- a/scoap3/articles/tests/test_article_views.py
+++ b/scoap3/articles/tests/test_article_views.py
@@ -57,7 +57,6 @@ def test_update_article_from_workflow(self, client, user, shared_datadir):
         )
 
         data["titles"][0]["title"] = "New title"
-        data["dois"].append({"value": "10.5506/APhysPolB.54.10-A5"})
         response = client.post(
             reverse("api:article-workflow-import-list"),
             data,
@@ -73,8 +72,7 @@ def test_update_article_from_workflow(self, client, user, shared_datadir):
         ]
 
         assert article.title == "New title"
-        assert len(expected_dois) == 2
-        assert "10.5506/APhysPolB.54.10-A5" in expected_dois
+        assert len(expected_dois) == 1
         assert "10.5506/APhysPolB.54.10-A3" in expected_dois
 
 
@@ -120,4 +118,4 @@ def test_create_article_from_workflow(self):
             data,
             content_type="application/json",
         )
-        assert response.status_code == status.HTTP_400_BAD_REQUEST
+        assert response.status_code == status.HTTP_200_OK
diff --git a/scoap3/tasks.py b/scoap3/tasks.py
index 881b43f6f..a9e7bee9d 100644
--- a/scoap3/tasks.py
+++ b/scoap3/tasks.py
@@ -8,7 +8,6 @@
 from django.core.exceptions import MultipleObjectsReturned, ValidationError
 from django.core.files.storage import storages
 from django.core.validators import URLValidator
-from django.db import IntegrityError
 from elasticsearch import ConnectionError, ConnectionTimeout, Elasticsearch
 from sentry_sdk import capture_exception
 
@@ -77,20 +76,17 @@ def _create_article(data, licenses):
         "subtitle": data["titles"][0].get("subtitle", ""),
         "abstract": data["abstracts"][0].get("value", ""),
     }
-    doi = article_data.get("dois")[0].get("value")
+    doi = data.get("dois")[0].get("value")
     if (
         doi
         and ArticleIdentifier.objects.filter(
-            identifier_type="doi", identifier_value=doi
+            identifier_type="DOI", identifier_value=doi
         ).exists()
     ):
-        article = Article.objects.get(pk=article_data["id"])
+        article = ArticleIdentifier.objects.get(
+            identifier_type="DOI", identifier_value=doi
+        ).article_id
         article.__dict__.update(**article_data)
-    elif Article.objects.filter(**article_data).exists():
-        article_id = [
-            article.get("id") for article in Article.objects.filter(**article_data)
-        ]
-        raise IntegrityError("The articles data already exists in DB:", article_id)
     else:
         article = Article.objects.create(**article_data)
         article._created_at = data.get("_created") or data.get("record_creation_date")
@@ -118,7 +114,6 @@ def _create_article_identifier(data, article):
             "identifier_value": doi.get("value"),
         }
         ArticleIdentifier.objects.get_or_create(**article_identifier_data)
-
     for arxiv in data.get("arxiv_eprints", []):
         article_identifier_data = {
             "article_id": article,
@@ -126,7 +121,9 @@ def _create_article_identifier(data, article):
             "identifier_value": arxiv.get("value"),
         }
         doi = data.get("dois")[0].get("value")
-        if ArticleIdentifier.objects.filter(article_id=article).exists():
+        if ArticleIdentifier.objects.filter(
+            identifier_type="arXiv", article_id=article
+        ).exists():
             article_identifier = ArticleIdentifier.objects.get(
                 article_id=article, identifier_type="arXiv"
             )
@@ -144,9 +141,7 @@ def _create_copyright(data, article):
             "year": copyright.get("year"),
         }
         if Copyright.objects.filter(article_id=article).exists():
-            copyright = Copyright.objects.get(
-                article_id=article, identifier_type="arXiv"
-            )
+            copyright = Copyright.objects.get(article_id=article)
             copyright.__dict__.update(**copyright_data)
         else:
             Copyright.objects.get_or_create(**copyright_data)
@@ -162,13 +157,15 @@ def _create_article_arxiv_category(data, article):
                 "category": arxiv_category,
                 "primary": True if idx == 0 else False,
             }
-        if ArticleArxivCategory.objects.filter(article_id=article).exists():
-            article_arxiv_category = ArticleArxivCategory.objects.get(
-                article_id=article, identifier_type="arXiv"
-            )
-            article_arxiv_category.__dict__.update(**article_arxiv_category_data)
-        else:
-            ArticleArxivCategory.objects.get_or_create(**article_arxiv_category_data)
+            if ArticleArxivCategory.objects.filter(article_id=article).exists():
+                article_arxiv_category = ArticleArxivCategory.objects.get(
+                    article_id=article
+                )
+                article_arxiv_category.__dict__.update(**article_arxiv_category_data)
+            else:
+                ArticleArxivCategory.objects.get_or_create(
+                    **article_arxiv_category_data
+                )
 
 
 def _create_publisher(data):
@@ -197,9 +194,7 @@ def _create_publication_info(data, article, publishers):
             "publisher_id": publishers[idx].id,
         }
         if PublicationInfo.objects.filter(article_id=article).exists():
-            publication_info = PublicationInfo.objects.get(
-                article_id=article, identifier_type="arXiv"
-            )
+            publication_info = PublicationInfo.objects.get(article_id=article)
             publication_info.__dict__.update(**publication_info_data)
         else:
             PublicationInfo.objects.get_or_create(**publication_info_data)
@@ -236,12 +231,8 @@ def _create_author(data, article):
             "email": author.get("email", ""),
             "author_order": idx,
         }
-        if Author.objects.filter(article_id=article).exists():
-            author_ = Author.objects.get(article_id=article, identifier_type="arXiv")
-            author_.__dict__.update(**author_data)
-        else:
-            author_obj, _ = Author.objects.get_or_create(**author_data)
-            authors.append(author_obj)
+        author_obj, _ = Author.objects.get_or_create(**author_data)
+        authors.append(author_obj)
     return authors