diff --git a/src/PolicyIO.ps1 b/src/PolicyIO.ps1
index 4e8723b..03623bb 100644
--- a/src/PolicyIO.ps1
+++ b/src/PolicyIO.ps1
@@ -598,6 +598,7 @@ function Import-GraphAdministrativeTemplate {
         $presVals    = @()
         $typeCounter = @{}
         $presFailed  = $false
+        $presDiag    = ''
         foreach ($pv in @(Get-PolicyProp $dv 'presentationValues')) {
             if (-not $pv) { continue }
             $pres = Get-PolicyProp $pv 'presentation'
@@ -605,8 +606,13 @@ function Import-GraphAdministrativeTemplate {
                 $presId = Resolve-TargetPresentationId -TargetPres $tgtPres -SrcPresentation $pres -Counter $typeCounter
                 # Presentation nicht zuordenbar (andere ADMX-Version im Ziel): die GANZE
                 # Einstellung ueberspringen, statt mit unvollstaendigem Body ein 400 zu
-                # provozieren.
-                if (-not $presId) { $presFailed = $true; break }
+                # provozieren. Zur Diagnose Quelle + Ziel-Presentations anhaengen.
+                if (-not $presId) {
+                    $srcI = "$([string](Get-PolicyProp $pres '@odata.type'))|label='$([string](Get-PolicyProp $pres 'label'))'"
+                    $tgtI = (@($tgtPres) | ForEach-Object { "$([string](Get-PolicyProp $_ '@odata.type'))|label='$([string](Get-PolicyProp $_ 'label'))'" }) -join ' ; '
+                    $presDiag = "Quelle[$srcI] Ziel[$tgtI]"
+                    $presFailed = $true; break
+                }
             } else {
                 $presId = [string](Get-PolicyProp $pres 'id')
             }
@@ -622,7 +628,7 @@ function Import-GraphAdministrativeTemplate {
             $presVals += $entry
         }
         if ($presFailed) {
-            $errors += "${defName}: Eingabefelder passen nicht zur Ziel-ADMX (andere Version?) - uebersprungen"
+            $errors += "${defName}: Presentation nicht zuordenbar - uebersprungen. $presDiag"
             continue
         }