update

app/Services/Plesk/PleskClientService.php

@@ -34,14 +34,27 @@ class PleskClientService
             ->first();
 
         if ($existing) {
-            return [
-                'error' => false,
-                'data'  => [
-                    'id'       => $existing->plesk_client_id,
-                    'login'    => $existing->login,
-                    'password' => Crypt::decryptString($existing->password),
-                ],
-            ];
+            if ($this->clientExists($server, (int) $existing->plesk_client_id)) {
+                return [
+                    'error' => false,
+                    'data'  => [
+                        'id'       => $existing->plesk_client_id,
+                        'login'    => $existing->login,
+                        'password' => Crypt::decryptString($existing->password),
+                    ],
+                ];
+            }
+
+            // Cached client was deleted directly on Plesk (out-of-band) — the id is
+            // dead, so any call reusing it (e.g. owner_client on domain creation)
+            // fails with "Owner does not exist". Drop the stale row and re-provision.
+            Log::warning('Cached Plesk client no longer exists on server — re-creating', [
+                'plesk_client_id' => $existing->plesk_client_id,
+                'customer_id'     => $customer->id,
+                'server_id'       => $server->id,
+            ]);
+
+            $existing->delete();
         }
 
         $login = $this->generateUsername($customer);
@@ -130,6 +143,20 @@ class PleskClientService
         }
     }
 
+    private function clientExists(DnsServer $server, int $pleskClientId): bool
+    {
+        try {
+            $response = $this->plesk->client($server, 15)
+                ->get($this->plesk->url($server, 'clients', "/{$pleskClientId}"));
+
+            return $response->successful();
+        } catch (RequestException $e) {
+            Log::error('Plesk client existence check failed', ['error' => $e->getMessage(), 'plesk_client_id' => $pleskClientId]);
+
+            return false;
+        }
+    }
+
     private function findByLogin(DnsServer $server, string $login): ?array
     {
         try {