From e846d32e47abcd884dca1b99ac6e0c7eb42e5853 Mon Sep 17 00:00:00 2001
From: masarray <ari.sulistiono@gmail.com>
Date: Mon, 20 Jul 2026 15:43:59 +0700
Subject: [PATCH 1/2] Allow downloading available relay fault-record files

---
 Services/FaultRecordTransferClient.cs | 4 +++-
 1 file changed, 3 insertions(+), 1 deletion(-)

diff --git a/Services/FaultRecordTransferClient.cs b/Services/FaultRecordTransferClient.cs
index eb4aee3b0..6fa93a4b7 100644
--- a/Services/FaultRecordTransferClient.cs
+++ b/Services/FaultRecordTransferClient.cs
@@ -103,7 +103,9 @@ public async Task<Iec61850FaultRecordDownloadResult> DownloadAsync(
                     MaximumTotalBytes = 1024L * 1024L * 1024L,
                     MaximumFileBytes = 512L * 1024L * 1024L,
                     MaximumReadOperationsPerFile = 100_000,
-                    RequireCompleteRecord = true,
+                    // Completeness describes COMTRADE companion coverage; it must not block
+                    // MMS FileOpen/FileRead of files that the IED actually exposes.
+                    RequireCompleteRecord = false,
                     RequireDeclaredSizeMatch = false
                 },
                 progress,

From 6cdec24151e29d63944ef1f7578af511f28eaf08 Mon Sep 17 00:00:00 2001
From: masarray <ari.sulistiono@gmail.com>
Date: Mon, 20 Jul 2026 15:44:58 +0700
Subject: [PATCH 2/2] Enable MMS download for partial and single-file fault
 records

---
 FaultRecordWindow.xaml.cs | 21 +++++++++++++++------
 1 file changed, 15 insertions(+), 6 deletions(-)

diff --git a/FaultRecordWindow.xaml.cs b/FaultRecordWindow.xaml.cs
index 28c865783..8c11ed044 100644
--- a/FaultRecordWindow.xaml.cs
+++ b/FaultRecordWindow.xaml.cs
@@ -90,7 +90,7 @@ public double ProgressValue
         private set => Set(ref _progressValue, Math.Clamp(value, 0d, 100d));
     }
 
-    public bool CanDownload => !IsBusy && Records.Any(row => row.IsSelected && row.Record.IsComplete);
+    public bool CanDownload => !IsBusy && Records.Any(row => row.IsSelected && row.Record.Files.Count > 0);
 
     public string SelectionSummary
     {
@@ -139,7 +139,7 @@ private async Task ScanAsync()
 
             StatusText = catalog.Records.Count == 0
                 ? "No supported fault-record files were found. Try a known remote directory such as COMTRADE or DR."
-                : $"{catalog.Summary} Select one or more complete records to download.";
+                : $"{catalog.Summary} Select one or more available records to download; partial companion sets remain downloadable.";
 
             if (catalog.Diagnostics.Count > 0)
                 StatusText += $" {catalog.Diagnostics.Count} bounded browse diagnostic(s) were reported.";
@@ -183,11 +183,11 @@ private async void Download_Click(object sender, RoutedEventArgs e)
             return;
 
         var selected = Records
-            .Where(row => row.IsSelected && row.Record.IsComplete)
+            .Where(row => row.IsSelected && row.Record.Files.Count > 0)
             .ToArray();
         if (selected.Length == 0)
         {
-            StatusText = "Select at least one complete COMTRADE record.";
+            StatusText = "Select at least one record that contains an available remote file.";
             return;
         }
 
@@ -344,7 +344,13 @@ public sealed class FaultRecordRow : INotifyPropertyChanged
     public FaultRecordRow(Iec61850FaultRecordSet record)
     {
         Record = record ?? throw new ArgumentNullException(nameof(record));
-        _status = record.IsComplete ? "Ready" : "Incomplete";
+        _status = record.Files.Count == 0
+            ? "Unavailable"
+            : record.IsComplete
+                ? "Ready"
+                : "Partial";
+        if (!record.IsComplete && record.Files.Count > 0)
+            _detail = $"Available file(s) can be downloaded; COMTRADE companion coverage: {record.Completeness}.";
     }
 
     public event PropertyChangedEventHandler? PropertyChanged;
@@ -355,7 +361,10 @@ public FaultRecordRow(Iec61850FaultRecordSet record)
     public string Completeness => Record.Completeness;
     public string ModifiedText => Record.LastModifiedUtc?.ToLocalTime().ToString("yyyy-MM-dd HH:mm:ss", CultureInfo.InvariantCulture) ?? "-";
     public string SizeText => Record.HasUnknownSize ? "Unknown" : FormatBytes(Record.KnownSizeBytes);
-    public string FilesText => string.Join(", ", Record.Files.Select(file => file.Extension.TrimStart('.').ToUpperInvariant()));
+    public string FilesText => string.Join(", ", Record.Files.Select(file =>
+        string.IsNullOrWhiteSpace(file.Extension)
+            ? "PACKAGE"
+            : file.Extension.TrimStart('.').ToUpperInvariant()));
 
     public bool IsSelected
     {