From 95d03b57f3e742f5e8bdd77d94bf5648fd4d1281 Mon Sep 17 00:00:00 2001
From: javorosas <javier.rosasb@gmail.com>
Date: Fri, 17 Jul 2026 17:12:08 +0200
Subject: [PATCH] fix: expose property tax accounts

---
 CHANGELOG.md                              |  4 ++++
 FacturapiTest/ClientCompatibilityTests.cs | 26 +++++++++++++++++++++++
 Models/InvoiceItem.cs                     |  3 +++
 facturapi-net.csproj                      |  2 +-
 4 files changed, 34 insertions(+), 1 deletion(-)

diff --git a/CHANGELOG.md b/CHANGELOG.md
index b103992..2edb696 100644
--- a/CHANGELOG.md
+++ b/CHANGELOG.md
@@ -5,6 +5,10 @@ All notable changes to this project will be documented in this file.
 The format is based on [Keep a Changelog](https://keepachangelog.com/en/1.0.0/),
 and this project adheres to [Semantic Versioning](https://semver.org/spec/v2.0.0.html).
 
+## [6.5.1] - 2026-07-17
+### Fixed
+- Expose `InvoiceItem.PropertyTaxAccount` as a list of property tax account numbers.
+
 ## [6.5.0] - 2026-06-07
 ### Added
 - Expose structured API error metadata on `FacturapiException`, including `Code`, `Path`, `Location`, `Errors`, `LogId`, and response `Headers`.
diff --git a/FacturapiTest/ClientCompatibilityTests.cs b/FacturapiTest/ClientCompatibilityTests.cs
index c3a167a..9b01c39 100644
--- a/FacturapiTest/ClientCompatibilityTests.cs
+++ b/FacturapiTest/ClientCompatibilityTests.cs
@@ -52,6 +52,32 @@ public async Task RetentionCancelAsync_ThrowsFacturapiExceptionWithStatus()
             Assert.Equal("bad retention", exception.Message);
         }
 
+        [Fact]
+        public async Task InvoiceRetrieveAsync_DeserializesPropertyTaxAccounts()
+        {
+            var handler = new StubHttpMessageHandler((request, cancellationToken) =>
+            {
+                var response = new HttpResponseMessage(HttpStatusCode.OK)
+                {
+                    Content = new StringContent(
+                        "{\"id\":\"inv_123\",\"items\":[{\"property_tax_account\":[\"0102030405\"]}]}",
+                        Encoding.UTF8,
+                        "application/json")
+                };
+                return Task.FromResult(response);
+            });
+
+            var httpClient = new HttpClient(handler)
+            {
+                BaseAddress = new Uri("https://www.facturapi.io/v2/")
+            };
+            var wrapper = new InvoiceWrapper("test_key", "v2", httpClient);
+
+            var invoice = await wrapper.RetrieveAsync("inv_123");
+
+            Assert.Equal(new[] { "0102030405" }, invoice.Items[0].PropertyTaxAccount);
+        }
+
         [Fact]
         public async Task InvoiceStampDraftAsync_AndLegacyMethod_BothWork()
         {
diff --git a/Models/InvoiceItem.cs b/Models/InvoiceItem.cs
index 906a18a..0f048b6 100644
--- a/Models/InvoiceItem.cs
+++ b/Models/InvoiceItem.cs
@@ -1,5 +1,7 @@
 using System;
 
+using System.Collections.Generic;
+
 namespace Facturapi
 {
     public class InvoiceItem
@@ -8,5 +10,6 @@ public class InvoiceItem
         public Decimal Discount { get; set; }
         public string Description { get; set; }
         public Product Product { get; set; }
+        public List<string> PropertyTaxAccount { get; set; }
     }
 }
diff --git a/facturapi-net.csproj b/facturapi-net.csproj
index 5a243c5..95b9c94 100644
--- a/facturapi-net.csproj
+++ b/facturapi-net.csproj
@@ -11,7 +11,7 @@
     <Summary>SDK oficial de Facturapi para .NET para facturación electrónica en México (CFDI), envío de documentos, búsqueda y trazabilidad.</Summary>
     <PackageTags>factura factura-electronica facturacion cfdi cfdi40 sat invoice invoicing facturapi mexico</PackageTags>
     <Title>Facturapi</Title>
-    <Version>6.5.0</Version>
+    <Version>6.5.1</Version>
     <PackageVersion>$(Version)</PackageVersion>
     <PackageLicenseExpression>MIT</PackageLicenseExpression>
     <PackageRequireLicenseAcceptance>false</PackageRequireLicenseAcceptance>