diff --git a/attach_amort.html b/attach_amort.html
index f643f9a..f369cd4 100644
--- a/attach_amort.html
+++ b/attach_amort.html
@@ -11,6 +11,7 @@
 {{* chercher l'écriture d'immobilisation *}}
 {{#select
 	line.id_transaction as immo_trans_id,
+	line.debit as montant,
 	trans.label as trans_label,
 	line.label as line_label
 	FROM acc_transactions_lines as line
@@ -24,11 +25,12 @@
 {{/select}}
 
 {{* chercher le doc associé à l'immo *}}
-{{#load id=$_GET.immo_doc_id|intval}}
+{{#load id=$_GET.immo_doc_id|intval assign="info_immo"}}
 	{{:assign label_immo=$label|or:$ligne_immo.trans_label}}
 {{else}}
 	{{:error message="Immobilisation non trouvée"}}
 {{/load}}
+{{:assign montant_immo=$info_immo.amount|or:$ligne_immo.montant}}
 
 {{if $ligne_immo.line_label != null && $ligne_immo.line_label != $label_immo}}
 	{{:assign label_immo=$label_immo|cat:" — "|cat:$ligne_immo.line_label}}
@@ -67,9 +69,9 @@
 
 {{* Traiter l'envoi du formulaire *}}
 {{#form on="save"}}
-
 	{{* vérifier que le montant saisi est inférieur au reste *}}
-	{{if $_POST.montant == null}}
+	{{if $_POST.montant == null || $_POST.montant == 0}}
+		{{:assign montant_amort=$reste}}
 		{{if $montant_affecte == 0}}
 			{{:assign saved_amount=null}}
 		{{else}}
@@ -88,6 +90,57 @@
 		{{/if}}
 	{{/if}}
 
+	{{* vérifier que le montant total des amortissements ne dépasse pas la valeur de l'immo *}}
+	{{* montant de l'immo *}}
+	{{:assign total_credits=0}}
+	{{#load
+		type="credit_link"
+		where="$$.immo_doc_id = :immo_doc_id" :immo_doc_id = $_GET.immo_doc_id|intval
+	}}
+		{{if $amount == null}}
+			{{#select credit FROM acc_transactions_lines WHERE id = :credit_line_id;
+				:credit_line_id=$credit_line_id
+			}}
+				{{:assign total_credits="%d+%d"|math:$total_credits:$credit}}
+			{{/select}}
+		{{else}}
+			{{:assign total_credits="%d+%d"|math:$total_credits:$amount}}
+		{{/if}}
+	{{/load}}
+	{{:assign montant_immo="%d-%d"|math:$montant_immo:$total_credits}}
+
+	{{* montant des amortissements *}}
+	{{:assign total_amort=0}}
+	{{#load
+		type="amort_link"
+		where="$$.immo_doc_id = :immo_doc_id"
+		:immo_doc_id=$_GET.immo_doc_id|intval
+	}}
+		{{if $amount == null || $amount == 0}}
+			{{#select
+				line.credit
+				FROM acc_transactions_lines AS line
+				INNER JOIN acc_transactions AS trans ON line.id_transaction = trans.id
+				INNER join acc_accounts AS account on line.id_account = account.id
+				WHERE line.id = :amort_line_id
+				;
+				:amort_line_id = $amort_line_id
+			}}
+				{{:assign total_amort="%d+%d"|math:$total_amort:$credit}}
+			{{/select}}
+		{{else}}
+			{{:assign total_amort="%d+%d"|math:$total_amort:$amount}}
+		{{/if}}
+	{{/load}}
+
+	{{:assign vnc="%d-%d"|math:$montant_immo:$total_amort}}
+	{{:assign total_amort="%d+%d"|math:$total_amort:$montant_amort}}
+	{{if $total_amort > $montant_immo}}
+		{{:assign ma="%f"|math:$montant_amort|money_currency:false}}
+		{{:assign vnc="%f"|math:$vnc|money_currency:false}}
+		{{:error message="Le montant de l'amortissement (%s) dépasse la valeur résiduelle de l'immobilisation (%s)"|args:$ma:$vnc}}
+	{{/if}}
+
 	{{* chercher les liaisons de l'écriture d'immobilisation *}}
 	{{#select
 		CASE links.id_related = :immo_trans_id
@@ -129,7 +182,16 @@
 		}}
 	{{/load}}
 
-	{{:redirect force="amortization.html?immo_line_id=%s&immo_doc_id=%s&ok=1&msg=attach_amort"|args:$_GET.immo_line_id:$_GET.immo_doc_id}}
+	{{* immo soldée ? *}}
+	{{if $total_amort == $montant_immo}}
+		{{:assign status="amortized"}}
+		{{:save
+			key=$info_immo.key
+			status=$status
+		}}
+	{{/if}}
+
+	{{:redirect force="amortization.html?immo_line_id=%s&immo_doc_id=%s&type_immo=%s&ok=1&msg=attach_amort"|args:$_GET.immo_line_id:$_GET.immo_doc_id:$status}}
 {{/form}}
 
 {{:admin_header title="Amortir l'immobilisation" custom_css="./style.css" current="module_amortization"}}
@@ -148,10 +210,12 @@
 		<dd><span class="num"><a href="{{$trans_url}}">#{{$amort_line.trans_id}}</a></span> {{$label_immo}}</dd>
 		<dt>Montant de l'écriture d'amortissement</dt>
 		<dd>{{$amort_line.amount|money_currency_html:false|raw}}</dd>
-		<dt>Montant déjà affecté</dt>
-		<dd class="money strong">{{"%f"|math:$montant_affecte|money_currency_html:false|raw}}</dd>
-		<dt>Montant restant à affecter</dt>
-		<dd class="money strong">{{"%f"|math:$reste|money_currency_html:false|raw}}</dd>
+		{{if $montant_affecte > 0}}
+			<dt>Montant déjà affecté</dt>
+			<dd class="money strong">{{"%f"|math:$montant_affecte|money_currency_html:false|raw}}</dd>
+			<dt>Montant restant à affecter</dt>
+			<dd class="money strong">{{"%f"|math:$reste|money_currency_html:false|raw}}</dd>
+		{{/if}}
 	</dl>
 </div>
 
diff --git a/detach_amort.html b/detach_amort.html
index caae1a0..06b99ff 100644
--- a/detach_amort.html
+++ b/detach_amort.html
@@ -68,5 +68,12 @@
 	{{:delete id=$id}}
 {{/load}}
 
+{{* marquer immo non soldée *}}
+{{#load id=$_GET.immo_doc_id|intval assign="info_immo"}}{{/load}}
+{{:save
+	key=$info_immo.key
+	status="managed"
+}}
+
 {{:redirect
 	to="amortization.html?immo_line_id=%s&ok=1&msg=detach&immo_doc_id=%s"|args:$_GET.immo_line_id:$_GET.immo_doc_id}}
diff --git a/save_amort.html b/save_amort.html
index 5f20c53..1b199c0 100644
--- a/save_amort.html
+++ b/save_amort.html
@@ -29,7 +29,7 @@
 {{/select}}
 {{:assign date_debut=$ligne_immo.date}}
 
-{{#load id=$_GET.immo_doc_id|intval}}
+{{#load id=$_GET.immo_doc_id|intval assign="info_immo"}}
 	{{:assign duree=$duration}}
 	{{if $date_mes != null}}
 		{{:assign date_debut=$date_mes}}
@@ -229,6 +229,7 @@
 		account=$credit_account|keys|value:0
 		id_project=$ligne_immo.project_id
 	}}
+
 	{{:api
 		method="POST"
 		path="accounting/transaction"
@@ -243,28 +244,28 @@
 	}}
 
 	{{* enregistrer la liaison des lignes *}}
-	{{#select
-		trans.id AS trans_id,
-		line.id AS line_id
-		FROM acc_transactions AS trans
-		INNER JOIN acc_transactions_lines AS line ON line.id_transaction = trans.id
-		WHERE trans.id = :trans_id
-		;
-		:trans_id = $result.id
-		}}
-		{{:assign amort_trans_id=$trans_id}}
-		{{:assign amort_line_id=$line_id}}
-	{{/select}}
-	{{if $amort_trans_id != null}}
+	{{#foreach from=$result.lines item="line"}}
+		{{if $line.account_code == $credit_account|keys|value:0}}
+			{{:save
+				key=""|uuid
+				type="amort_link"
+				immo_doc_id=$_GET.immo_doc_id|intval
+				amort_line_id=$line.id
+			}}
+			{{:break}}
+		{{/if}}
+	{{/foreach}}
+
+	{{* immo soldée ? *}}
+	{{if $_POST.montant|trim|money_int == $solde}}
+		{{:assign status="amortized"}}
 		{{:save
-			key=""|uuid
-			type="amort_link"
-			immo_doc_id=$_GET.immo_doc_id|intval
-			amort_line_id=$amort_line_id|intval
+			key=$info_immo.key
+			status=$status
 		}}
 	{{/if}}
 
-	{{:redirect force="amortization.html?immo_line_id=%s&immo_doc_id=%s&ok=1&msg=amortissement"|args:$_GET.immo_line_id:$_GET.immo_doc_id}}
+	{{:redirect force="amortization.html?immo_line_id=%s&immo_doc_id=%s&type_immo=%s&ok=1&msg=amortissement"|args:$_GET.immo_line_id:$_GET.immo_doc_id:$status}}
 {{/form}}
 
 {{:admin_header title="Ajout amortissement" custom_css="./style.css" current="module_amortization"}}