DN updates some array values can be NULL (to delete the value), so validation show allow for that

config/ldap.php

@@ -132,9 +132,45 @@ return [
 	 |
 	 */
 	'validation' => [
-		'objectclass' => ['objectclass'=>['array','min:1']],
+		'objectclass' => [
-		'gidnumber' => ['gidnumber'=>['sometimes','array','max:1'],'gidnumber.*'=>['integer','max:65535']],
+			'objectclass'=>[
-		'mail' => ['mail'=>['sometimes','array','min:1'],'mail.*'=>['nullable','email']],
+				'array',
-		'uidnumber' => ['uidnumber'=>['sometimes','array','max:1'],'uidnumber.*'=>['integer','max:65535']],
+				'min:1'
+			]
+		],
+		'gidnumber' => [
+			'gidnumber'=> [
+				'sometimes',
+				'array',
+				'max:1'
+			],
+			'gidnumber.*' => [
+				'nullable',
+				'integer',
+				'max:65535'
+			]
+		],
+		'mail' => [
+			'mail'=>[
+				'sometimes',
+				'array','min:1'
+			],
+			'mail.*' => [
+				'nullable',
+				'email'
+			]
+		],
+		'uidnumber' => [
+			'uidnumber' => [
+				'sometimes',
+				'array',
+				'max:1'
+			],
+			'uidnumber.*' => [
+				'nullable',
+				'integer',
+				'max:65535'
+			]
+		],
 	],
 ];