diff --git a/GrossesMitaines/GrossesMitainesAPI/Controllers/AddressController.cs b/GrossesMitaines/GrossesMitainesAPI/Controllers/AddressController.cs
index c138575..429767f 100644
--- a/GrossesMitaines/GrossesMitainesAPI/Controllers/AddressController.cs
+++ b/GrossesMitaines/GrossesMitainesAPI/Controllers/AddressController.cs
@@ -14,7 +14,7 @@ using Microsoft.EntityFrameworkCore;
 #endregion
 
 [EnableCors("_myAllowSpecificOrigins"), ApiController, Route("api/[controller]"),
- Authorize(AuthenticationSchemes = "Identity.Application")]
+ Authorize(AuthenticationSchemes = "Identity.Application", Roles ="Client, Administrateur")]
 public class AddressController : Controller {
     #region DI Fields
     private readonly ILogger<AddressController> _logger;
diff --git a/GrossesMitaines/GrossesMitainesAPI/Controllers/InvoiceController.cs b/GrossesMitaines/GrossesMitainesAPI/Controllers/InvoiceController.cs
index 931a949..39152b0 100644
--- a/GrossesMitaines/GrossesMitainesAPI/Controllers/InvoiceController.cs
+++ b/GrossesMitaines/GrossesMitainesAPI/Controllers/InvoiceController.cs
@@ -16,7 +16,7 @@ using System.Linq;
 #endregion
 
 [EnableCors("_myAllowSpecificOrigins"), ApiController, Route("api/[controller]"),
- Authorize(AuthenticationSchemes = "Identity.Application", Roles = "Administrateur")]
+ Authorize(AuthenticationSchemes = "Identity.Application", Roles = "Client, Administrateur")]
 public class InvoiceController : Controller {
     #region DI Fields
     private readonly ILogger<InvoiceController> _logger;
@@ -43,15 +43,14 @@ public class InvoiceController : Controller {
     #endregion
 
     #region API Methods
-    [HttpGet, Authorize(Roles = "Client, Administrateur")]
+    [HttpGet]
     public async Task<ActionResult<List<InvoiceModel>>> Get(bool? all = false) {
         IList<string> roles;
         string id;
         try { // Trouver les rôles de l'utilisateur, assumer non-admin si impossible à trouver.
             var user = await _userMan.GetUserAsync(_signInMan.Context.User);
             roles = await _userMan.GetRolesAsync(user);
-        }
-        catch (Exception e) {
+        } catch (Exception e) {
             _logger.LogError(10, e.Message);
             roles = new List<string>();
         }
@@ -71,30 +70,27 @@ public class InvoiceController : Controller {
                     .Include(x => x.Products)
                     .ThenInclude(y => y.Product)
                     .Where(x => x.LinkedAccount != null && x.LinkedAccount.Id == id).ToList());
-        }
-        catch (Exception e) {
+        } catch (Exception e) {
             _logger.LogError(10, e.Message);
             return BadRequest();
         }
     }
 
-    [HttpGet("{id}"), Authorize(Roles = "Client, Administrateur")]
+    [HttpGet("{id}")]
     public async Task<ActionResult<InvoiceModel>> Get(int id) {
         IList<string> roles;
         InvoiceModel inv;
 
         try { // Trouver les rôles de l'utilisateur, assumer non-admin si impossible à trouver.
             roles = await _userMan.GetRolesAsync(await _userMan.GetUserAsync(_signInMan.Context.User));
-        }
-        catch (Exception e) {
+        } catch (Exception e) {
             _logger.LogError(10, e.Message);
             roles = new List<string>();
         }
 
         try {
             inv = _context.Invoices.Where(x => x.Id == id).Include("ShippingAddress").First();
-        }
-        catch (Exception e) {
+        } catch (Exception e) {
             _logger.LogError(10, e.Message);
             return BadRequest();
         }
@@ -119,7 +115,11 @@ public class InvoiceController : Controller {
             PhoneNumber = sinv.PhoneNumber,
             PurchaseDate = DateTime.Now
         };
-        AddressModel ad = _context.Addresses.FirstOrDefault(x => x.CivicNumber == sinv.CivicNumber &&
+        AddressModel ad;
+
+        if (user is not null) {
+            inv.LinkedAccount = user;
+            ad = _context.Addresses.FirstOrDefault(x => x.CivicNumber == sinv.CivicNumber &&
                                                         x.Appartment == sinv.Appartment &&
                                                         x.Street == sinv.Street &&
                                                         x.City == sinv.City &&
@@ -134,14 +134,22 @@ public class InvoiceController : Controller {
                                                             Country = sinv.Country,
                                                             PostalCode = sinv.PostalCode
                                                         };
+        }
+        else ad = new() {
+            CivicNumber = sinv.CivicNumber,
+            Appartment = sinv.Appartment,
+            Street = sinv.Street,
+            City = sinv.City,
+            Province = sinv.Province,
+            Country = sinv.Country,
+            PostalCode = sinv.PostalCode
+        };
+
         inv.ShippingAddress = ad;
-        if (user is not null)
-            inv.LinkedAccount = user;
 
         try {
             prods = _context.Products.Where(x => sinv.ProdQuant.Select(x => x.Key).Contains(x.Id)).ToList();
-        }
-        catch (Exception e) {
+        } catch (Exception e) {
             _logger.LogError(8, e.Message);
             return BadRequest();
         }
@@ -158,8 +166,7 @@ public class InvoiceController : Controller {
                 inventProd.Status = inventProd.Status == ProductModel.States.Clearance ?
                                                          ProductModel.States.Discontinued :
                                                          ProductModel.States.BackOrder;
-            }
-            else inventProd.Quantity -= prod.Value;
+            } else inventProd.Quantity -= prod.Value;
             inventProd.LastSale = DateTime.Now;
             inventProd.Sales += prod.Value;
         }
@@ -172,8 +179,7 @@ public class InvoiceController : Controller {
             _context.Invoices.Add(inv);
             _context.Products.UpdateRange(prods);
             _context.SaveChanges();
-        }
-        catch (Exception e) {
+        } catch (Exception e) {
             _logger.LogError(8, e.Message);
             return BadRequest(e.InnerException.Message);
         }
@@ -190,16 +196,14 @@ public class InvoiceController : Controller {
         try { // Trouver la commande.
             inv = _context.Invoices.Where(x => x.Id == id)
                                    .Include("Product").First();
-        }
-        catch (Exception e) {
+        } catch (Exception e) {
             _logger.LogError(8, e.Message);
             return BadRequest();
         }
 
         try { // Trouver les rôles de l'utilisateur, assumer non-admin si impossible à trouver.
             roles = await _userMan.GetRolesAsync(await _userMan.GetUserAsync(_signInMan.Context.User));
-        }
-        catch (Exception e) {
+        } catch (Exception e) {
             _logger.LogError(10, e.Message);
             roles = new List<string>();
         }
@@ -231,8 +235,7 @@ public class InvoiceController : Controller {
         try {
             _context.Update(inv);
             _context.SaveChanges();
-        }
-        catch (Exception e) {
+        } catch (Exception e) {
             _logger.LogError(8, e.Message);
             return BadRequest();
         }
diff --git a/GrossesMitaines/GrossesMitainesAPI/Program.cs b/GrossesMitaines/GrossesMitainesAPI/Program.cs
index 91bf90d..ad50110 100644
--- a/GrossesMitaines/GrossesMitainesAPI/Program.cs
+++ b/GrossesMitaines/GrossesMitainesAPI/Program.cs
@@ -28,6 +28,9 @@ builder.Services.AddIdentityCore<InventoryUser>()
                     .AddRoles<IdentityRole>()
                     .AddEntityFrameworkStores<InventoryContext>()
                     .AddSignInManager();
+builder.Services.Configure<IdentityOptions>(o =>
+    o.User.RequireUniqueEmail = true);
+
 builder.Services.AddAuthorization();
 builder.Services.AddAuthentication().AddIdentityCookies();