diff --git a/historique.html b/historique.html
index 39311a6..b9273f9 100644
--- a/historique.html
+++ b/historique.html
@@ -132,7 +132,7 @@
 		mvt.key AS mvt_key,
 		json_extract(mvt.document, '$.amount') - IFNULL(SUM(json_extract(mvt2.document, '$.amount')), 0) AS reste
 		FROM module_data_equipment AS mvt
-		LEFT JOIN module_data_equipment AS link ON mvt.key = json_extract(link.document, '$.output')
+		LEFT JOIN module_data_equipment AS link ON mvt.key = json_extract(link.document, '$.temp_key')
 		LEFT JOIN module_data_equipment AS mvt2 ON mvt2.key = json_extract(link.document, '$.return')
 		WHERE
 			json_extract(mvt.document, '$.operation') IN !op
@@ -223,7 +223,7 @@
 		mvt.key AS mvt_key,
 		json_extract(mvt.document, '$.amount') - IFNULL(SUM(json_extract(mvt2.document, '$.amount')), 0) AS present
 		FROM module_data_equipment AS mvt
-		LEFT JOIN module_data_equipment AS link ON mvt.key = json_extract(link.document, '$.input')
+		LEFT JOIN module_data_equipment AS link ON mvt.key = json_extract(link.document, '$.temp_key')
 		LEFT JOIN module_data_equipment AS mvt2 ON mvt2.key = json_extract(link.document, '$.return')
 		WHERE
 			json_extract(mvt.document, '$.operation') IN !op
diff --git a/mouvements/input_return.html b/mouvements/input_return.html
index dd778f4..5c615b5 100644
--- a/mouvements/input_return.html
+++ b/mouvements/input_return.html
@@ -33,7 +33,7 @@
 {{#select
 	json_extract(mvt.document, '$.amount') - IFNULL(SUM(json_extract(mvt2.document, '$.amount')), 0) AS present
 	FROM module_data_equipment AS mvt
-	LEFT JOIN module_data_equipment AS link ON mvt.key = json_extract(link.document, '$.input')
+	LEFT JOIN module_data_equipment AS link ON mvt.key = json_extract(link.document, '$.temp_key')
 	LEFT JOIN module_data_equipment AS mvt2 ON mvt2.key = json_extract(link.document, '$.return')
 	WHERE
 	json_extract(mvt.document, '$.operation') IN !op
@@ -133,7 +133,8 @@
 			key=""|uuid
 			validate_schema="link.schema.json"
 			type="link"
-			input=$_GET.key
+			direction="input"
+			temp_key=$_GET.key
 			return=$mvt_key
 		}}
 		{{:redirect force="../historique.html?ok=1&key=%s&prop=0&msg=retour"|args:$mvt_new.equipment}}
diff --git a/mouvements/link.schema.json b/mouvements/link.schema.json
index 0048f8a..57c6846 100644
--- a/mouvements/link.schema.json
+++ b/mouvements/link.schema.json
@@ -6,18 +6,18 @@
 			"type": "string",
 			"enum": ["link"]
 		},
-		"input" : {
-			"description": "clé d'une entrée temporaire",
-			"type": "string"
+		"direction" : {
+			"type" : "string",
+			"enum" : ["input", "output"]
 		},
-		"output" : {
-			"description": "clé d'une sortie temporaire",
+		"temp_key" : {
+			"description": "clé d'une entrée ou sortie temporaire",
 			"type": "string"
 		},
 		"return": {
-			"description": "clé d'un retour",
+			"description": "clé du retour associé",
 			"type": "string"
 		}
 	},
-	"required": ["type", "return"]
+	"required": ["type", "direction", "temp_key", "return"]
 }
diff --git a/mouvements/output_return.html b/mouvements/output_return.html
index 30f0878..595774b 100644
--- a/mouvements/output_return.html
+++ b/mouvements/output_return.html
@@ -3,7 +3,7 @@
 {{*
 	Enregistrer un retour de sortie temporaire
 	paramètres :
-	- key		: clé du mouvement
+	- key		: clé de la sortie temporaire
 *}}
 
 {{* infos du mouvement *}}
@@ -33,7 +33,7 @@
 {{#select
 	json_extract(mvt.document, '$.amount') - IFNULL(SUM(json_extract(mvt2.document, '$.amount')), 0) AS exterieur
 	FROM module_data_equipment AS mvt
-	LEFT JOIN module_data_equipment AS link ON mvt.key = json_extract(link.document, '$.output')
+	LEFT JOIN module_data_equipment AS link ON mvt.key = json_extract(link.document, '$.temp_key')
 	LEFT JOIN module_data_equipment AS mvt2 ON mvt2.key = json_extract(link.document, '$.return')
 	WHERE
 	json_extract(mvt.document, '$.operation') IN !op
@@ -133,7 +133,8 @@
 			key=""|uuid
 			validate_schema="link.schema.json"
 			type="link"
-			output=$_GET.key
+			direction="output"
+			temp_key=$_GET.key
 			return=$mvt_key
 		}}
 		{{:redirect force="../historique.html?ok=1&key=%s&prop=1&msg=retour"|args:$mvt_new.equipment}}
diff --git a/mouvements/supprimer_mouvement.html b/mouvements/supprimer_mouvement.html
index e603a2f..0d94d55 100644
--- a/mouvements/supprimer_mouvement.html
+++ b/mouvements/supprimer_mouvement.html
@@ -26,7 +26,7 @@
 		{{:assign var="type_operation" from="config.input_nature.%s.type"|args:$mvt_suppr.operation}}
 
 		{{if $type_operation == 'temporaire'}}
-			{{#load type="link" where="$$.input = :key OR $$.return = :key" :key=$_GET.key}}
+			{{#load type="link" where="$$.temp_key = :key OR $$.return = :key" :key=$_GET.key}}
 				{{:assign link_key=$key}}
 			{{/load}}
 			{{if $link_key != null}}
@@ -75,7 +75,7 @@
 		{{:assign var="type_operation" from="config.output_nature.%s.type"|args:$mvt_suppr.operation}}
 
 		{{if $type_operation == 'temporaire'}}
-			{{#load type="link" where="$$.output = :key OR $$.return = :key" :key=$_GET.key}}
+			{{#load type="link" where="$$.temp_key = :key OR $$.return = :key" :key=$_GET.key}}
 				{{:assign link_key=$key}}
 			{{/load}}
 			{{if $link_key != null}}