diff --git a/Marco.Pms.Services/Service/ServiceProjectService.cs b/Marco.Pms.Services/Service/ServiceProjectService.cs
index 5ba6474..5a44d1a 100644
--- a/Marco.Pms.Services/Service/ServiceProjectService.cs
+++ b/Marco.Pms.Services/Service/ServiceProjectService.cs
@@ -808,9 +808,9 @@ namespace Marco.Pms.Services.Service
         public async Task<ApiResponse<object>> UpdateProjectBranchAsync(Guid id, ProjectBranchDto model, Employee loggedInEmployee, Guid tenantId)
         {
             // Validate ID consistency between route parameter and payload DTO
-            if (model.Id.HasValue && model.Id != id)
+            if (!model.Id.HasValue && model.Id != id)
             {
-                _logger.LogWarning("ID mismatch: Route ID {RouteId} != Payload ID {PayloadId}", id, model.Id);
+                _logger.LogWarning("ID mismatch: Route ID {RouteId} != Payload ID {PayloadId}", id, model.Id ?? Guid.Empty);
                 return ApiResponse<object>.ErrorResponse("ID mismatch between route and payload", "The ID provided in the route does not match the payload.", 400);
             }