diff --git a/facho/fe/form/__init__.py b/facho/fe/form/__init__.py
index 46768c4..32d2453 100644
--- a/facho/fe/form/__init__.py
+++ b/facho/fe/form/__init__.py
@@ -100,15 +100,31 @@ class Amount:
 
 @dataclass
 class Item:
+    scheme_name: str
+    scheme_agency_id: str
+    scheme_id: str
     description: str
     id: str
 
 
-@dataclass
 class StandardItem(Item):
-    pass
+    def __init__(self, id_: str, description: str = ''):
+        super().__init__(id=id_,
+                         description=description,
+                         scheme_name='',
+                         scheme_id='999',
+                         scheme_agency_id='')
 
 
+class UNSPSCItem(Item):
+    def __init__(self, id_: str, description: str = ''):
+        super().__init__(id=id_,
+                         description=description,
+                         scheme_name='UNSPSC',
+                         scheme_id='001',
+                         scheme_agency_id='10')        
+
+        
 @dataclass
 class Country:
     code: str
diff --git a/facho/fe/form_xml/invoice.py b/facho/fe/form_xml/invoice.py
index b0eb6ae..aed6697 100644
--- a/facho/fe/form_xml/invoice.py
+++ b/facho/fe/form_xml/invoice.py
@@ -514,8 +514,13 @@ class DIANInvoiceXML(fe.FeXML):
                 line.set_element('./cac:TaxTotal/cac:TaxSubtotal/cac:TaxCategory/cac:TaxScheme/cbc:ID', subtotal.tax_scheme_ident)
                 line.set_element('./cac:TaxTotal/cac:TaxSubtotal/cac:TaxCategory/cac:TaxScheme/cbc:Name', subtotal.tax_scheme_name)
             line.set_element('./cac:Item/cbc:Description', invoice_line.item.description)
-            # TODO
-            line.set_element('./cac:Item/cac:StandardItemIdentification/cbc:ID', invoice_line.item.id)
+
+            line.set_element('./cac:Item/cac:StandardItemIdentification/cbc:ID',
+                             invoice_line.item.id,
+                             schemeID=invoice_line.item.scheme_id,
+                             schemeName=invoice_line.item.scheme_name,
+                             schemeAgencyID=invoice_line.item.scheme_agency_id)
+
             line.set_element('./cac:Price/cbc:PriceAmount', invoice_line.price.amount, currencyID="COP")
             #DIAN 1.7.-2020: FBB04
             line.set_element('./cac:Price/cbc:BaseQuantity', invoice_line.price.amount)
diff --git a/tests/fixtures.py b/tests/fixtures.py
index 57cf5c8..487e5df 100644
--- a/tests/fixtures.py
+++ b/tests/fixtures.py
@@ -131,7 +131,7 @@ def simple_invoice():
     inv.add_invoice_line(form.InvoiceLine(
         quantity = 1,
         description = 'producto facho',
-        item = form.StandardItem('test', 9999),
+        item = form.StandardItem( 9999),
         price = form.Price(form.Amount(100.0), '01', ''),
         tax = form.TaxTotal(
             tax_amount = form.Amount(0.0),
diff --git a/tests/test_fe_form.py b/tests/test_fe_form.py
index 56e1b51..db2fdf9 100644
--- a/tests/test_fe_form.py
+++ b/tests/test_fe_form.py
@@ -91,7 +91,7 @@ def test_invoice_totals(simple_invoice_without_lines):
     simple_invoice.add_invoice_line(form.InvoiceLine(
         quantity = 1,
         description = 'producto',
-        item = form.StandardItem('test', 9999),
+        item = form.StandardItem(9999),
         price = form.Price(form.Amount(1_500_000), '01', ''),
         tax = form.TaxTotal(
             subtotals = [
@@ -114,7 +114,7 @@ def test_invoice_cufe(simple_invoice_without_lines):
     simple_invoice.add_invoice_line(form.InvoiceLine(
         quantity = 1,
         description = 'producto',
-        item = form.StandardItem('test', 111),
+        item = form.StandardItem(111),
         price = form.Price(form.Amount(1_500_000), '01', ''),
         tax = form.TaxTotal(
             subtotals = [
@@ -179,7 +179,7 @@ def test_credit_note_cude(simple_credit_note_without_lines):
     simple_invoice.add_invoice_line(form.InvoiceLine(
         quantity = 1,
         description = 'producto',
-        item = form.StandardItem('test', 111),
+        item = form.StandardItem(111),
         price = form.Price(form.Amount(5_000), '01', ''),
         tax = form.TaxTotal(
             subtotals = [
@@ -214,7 +214,7 @@ def test_debit_note_cude(simple_debit_note_without_lines):
     simple_invoice.add_invoice_line(form.InvoiceLine(
         quantity = 1,
         description = 'producto',
-        item = form.StandardItem('test', 111),
+        item = form.StandardItem(111),
         price = form.Price(form.Amount(30_000), '01', ''),
         tax = form.TaxTotal(
             subtotals = [
diff --git a/tests/test_form.py b/tests/test_form.py
index 08b5aed..d0a6417 100644
--- a/tests/test_form.py
+++ b/tests/test_form.py
@@ -18,7 +18,7 @@ def test_invoice_legalmonetary():
     inv.add_invoice_line(form.InvoiceLine(
         quantity = 1,
         description = 'producto facho',
-        item = form.StandardItem('test', 9999),
+        item = form.StandardItem(9999),
         price = form.Price(
             amount = form.Amount(100.0),
             type_code = '01',
@@ -44,7 +44,7 @@ def test_FAU10():
     inv.add_invoice_line(form.InvoiceLine(
         quantity = 1,
         description = 'producto facho',
-        item = form.StandardItem('test', 9999),
+        item = form.StandardItem(9999),
         price = form.Price(
             amount = form.Amount(100.0),
             type_code = '01',
@@ -72,7 +72,7 @@ def test_FAU14():
     inv.add_invoice_line(form.InvoiceLine(
         quantity = 1,
         description = 'producto facho',
-        item = form.StandardItem('test', 9999),
+        item = form.StandardItem(9999),
         price = form.Price(
             amount = form.Amount(100.0),
             type_code = '01',