diff --git a/facho/fe/form.py b/facho/fe/form.py
index 3bf4f80..2566607 100644
--- a/facho/fe/form.py
+++ b/facho/fe/form.py
@@ -451,7 +451,8 @@ class DIANInvoiceXML(fe.FeXML):
         fexml.placeholder_for('/fe:Invoice/cbc:UUID')
         fexml.set_element('/fe:Invoice/cbc:DocumentCurrencyCode', 'COP')
         fexml.set_element('/fe:Invoice/cbc:IssueDate', invoice.invoice_issue.strftime('%Y-%m-%d'))
-        fexml.set_element('/fe:Invoice/cbc:IssueTime', invoice.invoice_issue.strftime('%H:%M:%S%z'))
+        #DIAN 1.7.-2020: FAD10
+        fexml.set_element('/fe:Invoice/cbc:IssueTime', invoice.invoice_issue.strftime('%H:%M:%S-05:00'))
         fexml.set_element('/fe:Invoice/cbc:InvoiceTypeCode', codelist.TipoDocumento.by_name('Factura de Venta Nacional')['code'],
                           listAgencyID='195',
                           listAgencyName='No matching global declaration available for the validation root',
diff --git a/tests/test_fe_form.py b/tests/test_fe_form.py
index 27e9549..a7cfdc7 100644
--- a/tests/test_fe_form.py
+++ b/tests/test_fe_form.py
@@ -181,8 +181,8 @@ def test_invoice_cufe(simple_invoice_without_lines):
     simple_invoice = simple_invoice_without_lines
     simple_invoice.invoice_ident = '323200000129'
     simple_invoice.invoice_issue = datetime.strptime('2019-01-16 10:53:10-05:00', '%Y-%m-%d %H:%M:%S%z')
-    simple_invoice.invoice_supplier.ident = form.PartyIdentification('700085371', '', '31')
-    simple_invoice.invoice_customer.ident = form.PartyIdentification('800199436', '', '31')
+    simple_invoice.invoice_supplier.ident = form.PartyIdentification('700085371', '5', '31')
+    simple_invoice.invoice_customer.ident = form.PartyIdentification('800199436', '5', '31')
     simple_invoice.add_invoice_line(form.InvoiceLine(
         quantity = 1,
         description = 'producto',