diff --git a/tests/test_cross_validate.py b/tests/test_cross_validate.py
new file mode 100644
index 0000000..9457c6e
--- /dev/null
+++ b/tests/test_cross_validate.py
@@ -0,0 +1,19 @@
+from validation import FromAccount
+
+
+account_data = FromAccount(
+    account_name="Astrid Janneke Willems",
+    account_holder_name="Astrid Janneke",
+    account_holder_surname="Willems",
+    passport_number="HW8642009",
+    reference_currency="EUR",
+    other_currency=None,
+    building_number="18",
+    street_name="Lijnbaan",
+    postal_code="7523 05",
+    city="Assen",
+    country="Netherlands",
+    name="Astrid Janneke Willems",
+    phone_number="+31 06 34579996",
+    email="astrid.willems@upcmail.nl"
+)
\ No newline at end of file
diff --git a/validation/cross_validate.py b/validation/cross_validate.py
index c07ce14..928c460 100644
--- a/validation/cross_validate.py
+++ b/validation/cross_validate.py
@@ -1,17 +1,17 @@
 from enum import StrEnum
-from typing import Any, Callable
+from typing import Any, Callable, Optional
 from pydantic import BaseModel
 
 from validation import FromAccount, FromDescription, FromPassport, FromProfile
 
 
-
-class ValidatedData(BaseModel):
+class ExtractedData(BaseModel):
     account: FromAccount
     description: FromDescription
     passport: FromPassport
     profile: FromProfile
 
+
 class DocType(StrEnum):
     account = "account"
     description = "description"
@@ -19,7 +19,7 @@ class DocType(StrEnum):
     profile = "profile"
 
 
-class ValidationFailure(BaseModel):
+class XValFailure(BaseModel):
     doc1_type: DocType
     doc1_val: str
 
@@ -27,19 +27,34 @@ class ValidationFailure(BaseModel):
     doc2_val: str
 
 
-
-def xref_client_name(data: ValidatedData) -> ValidationFailure:
+def xval_name_account_description(data: ExtractedData) -> Optional[XValFailure]:
     if data.account.account_holder_name != data.description.full_name:
-        return ValidationFailure(
-            doc1_type=DocType.account, doc1_val=f"{data.account.account_holder_name=}",
-            doc2_type=DocType.description, doc2_val=f"{data.description.full_name=}"
+        return XValFailure(
+            doc1_type=DocType.account,
+            doc1_val=f"{data.account.account_holder_name=}",
+            doc2_type=DocType.description,
+            doc2_val=f"{data.description.full_name=}",
         )
-    # TODO CONTINUE
 
-def xref_all(data: ValidatedData) -> list[ValidationFailure]:
-    xref_validators: list[Callable[[ValidatedData], ValidationFailure]] = [xref_client_name]
+
+def xval_email_account_profile(data: ExtractedData) -> Optional[XValFailure]:
+    if data.account.email != data.profile.email:
+        return XValFailure(
+            doc1_type=DocType.account,
+            doc1_val=f"{data.account.email=}",
+            doc2_type=DocType.profile,
+            doc2_val=f"{data.profile.email=}"
+        )
+
+
+def xref_all(data: ExtractedData) -> list[XValFailure]:
+    xref_validators: list[Callable[[ExtractedData], Optional[XValFailure]]] = [
+        xval_name_account_description
+    ]
 
     validation_failures = []
     for validator in xref_validators:
-        validation_failures.append(validator(data))
-    return validation_failures
\ No newline at end of file
+        failure = validator(data)
+        if not failure is None:
+            validation_failures.append(failure)
+    return validation_failures