diff --git a/htdocs/accountancy/class/accountancysystem.class.php b/htdocs/accountancy/class/accountancysystem.class.php
index dee3356bfb6..b70fa7238bb 100644
--- a/htdocs/accountancy/class/accountancysystem.class.php
+++ b/htdocs/accountancy/class/accountancysystem.class.php
@@ -43,7 +43,11 @@ class AccountancySystem
 	 */
 	public $rowid;
 
+	/**
+     * @var int ID
+     */
 	public $fk_pcg_version;
+
 	public $pcg_type;
 	public $pcg_subtype;
 
diff --git a/htdocs/accountancy/class/accountingaccount.class.php b/htdocs/accountancy/class/accountingaccount.class.php
index 07918488636..9030e65b049 100644
--- a/htdocs/accountancy/class/accountingaccount.class.php
+++ b/htdocs/accountancy/class/accountingaccount.class.php
@@ -80,7 +80,12 @@ class AccountingAccount extends CommonObject
 	public $rowid;
 
 	public $datec; // Creation date
+
+	/**
+     * @var int ID
+     */
 	public $fk_pcg_version;
+
 	public $pcg_type;
 	public $pcg_subtype;
 	public $account_number;
diff --git a/htdocs/accountancy/class/bookkeeping.class.php b/htdocs/accountancy/class/bookkeeping.class.php
index 5d9572da684..fe20d64fb76 100644
--- a/htdocs/accountancy/class/bookkeeping.class.php
+++ b/htdocs/accountancy/class/bookkeeping.class.php
@@ -70,8 +70,17 @@ class BookKeeping extends CommonObject
 	public $date_lim_reglement;
 	public $doc_type;
 	public $doc_ref;
+
+	/**
+     * @var int ID
+     */
 	public $fk_doc;
+
+	/**
+     * @var int ID
+     */
 	public $fk_docdet;
+
 	public $thirdparty_code;
 	public $subledger_account;
 	public $subledger_label;
@@ -82,7 +91,12 @@ class BookKeeping extends CommonObject
 	public $credit;
 	public $montant;
 	public $sens;
+
+	/**
+     * @var int ID
+     */
 	public $fk_user_author;
+
 	public $import_key;
 	public $code_journal;
 	public $journal_label;
@@ -1871,8 +1885,17 @@ class BookKeepingLine
 	public $doc_date = '';
 	public $doc_type;
 	public $doc_ref;
+
+	/**
+     * @var int ID
+     */
 	public $fk_doc;
+
+	/**
+     * @var int ID
+     */
 	public $fk_docdet;
+
 	public $thirdparty_code;
 	public $subledger_account;
 	public $subledger_label;
@@ -1883,7 +1906,12 @@ class BookKeepingLine
 	public $credit;
 	public $montant;
 	public $sens;
+
+	/**
+     * @var int ID
+     */
 	public $fk_user_author;
+
 	public $import_key;
 	public $code_journal;
 	public $journal_label;