diff --git a/htdocs/accountancy/class/bookkeeping.class.php b/htdocs/accountancy/class/bookkeeping.class.php
index 754dd262369..8f31b40bc54 100644
--- a/htdocs/accountancy/class/bookkeeping.class.php
+++ b/htdocs/accountancy/class/bookkeeping.class.php
@@ -169,7 +169,15 @@ class BookKeeping extends CommonObject
 		if (empty($this->numero_compte) || $this->numero_compte == '-1')
 		{
 		    $langs->load("errors");
-            $this->errors[]=$langs->trans('ErrorFieldAccountNotDefinedForBankLine', $this->fk_docdet);		    
+            if (in_array($this->doc_type, array('bank', 'expense_report')))
+            {
+		        $this->errors[]=$langs->trans('ErrorFieldAccountNotDefinedForBankLine', $this->fk_docdet,  $this->doc_type);
+            }
+            else
+            {
+                $this->errors[]=$langs->trans('ErrorFieldAccountNotDefinedForInvoiceLine', $this->fk_doc,  $this->doc_type);		    
+            }
+		    
 		    return -1;
 		}
 		
@@ -178,11 +186,12 @@ class BookKeeping extends CommonObject
 		
 		$this->piece_num = 0;
 		
-		// first check if line not yet in bookkeeping
+		// First check if line not yet already in bookkeeping
 		$sql = "SELECT count(*) as nb";
 		$sql .= " FROM " . MAIN_DB_PREFIX . $this->table_element;
 		$sql .= " WHERE doc_type = '" . $this->doc_type . "'";
-		$sql .= " AND fk_docdet = " . $this->fk_docdet;
+		$sql .= " AND fk_doc = " . $this->fk_doc;
+		$sql .= " AND fk_docdet = " . $this->fk_docdet;                   // This field can be 0 is record is for several lines 
 		$sql .= " AND numero_compte = '" . $this->numero_compte . "'";
 	    $sql .= " AND entity IN (" . getEntity("accountancy", 1) . ")";
 		
diff --git a/htdocs/langs/en_US/errors.lang b/htdocs/langs/en_US/errors.lang
index 72912ca2b1f..4f700109c33 100644
--- a/htdocs/langs/en_US/errors.lang
+++ b/htdocs/langs/en_US/errors.lang
@@ -11,6 +11,7 @@ ErrorLoginAlreadyExists=Login %s already exists.
 ErrorGroupAlreadyExists=Group %s already exists.
 ErrorRecordNotFound=Record not found.
 ErrorFailToCopyFile=Failed to copy file '<b>%s</b>' into '<b>%s</b>'.
+ErrorFailToCopyDir=Failed to copy directory '<b>%s</b>' into '<b>%s</b>'.
 ErrorFailToRenameFile=Failed to rename file '<b>%s</b>' into '<b>%s</b>'.
 ErrorFailToDeleteFile=Failed to remove file '<b>%s</b>'.
 ErrorFailToCreateFile=Failed to create file '<b>%s</b>'.
@@ -115,7 +116,7 @@ ErrorNoActivatedBarcode=No barcode type activated
 ErrUnzipFails=Failed to unzip %s with ZipArchive
 ErrNoZipEngine=No engine to unzip %s file in this PHP
 ErrorFileMustBeADolibarrPackage=The file %s must be a Dolibarr zip package
-ErrorFileRequired=It takes a package Dolibarr file
+ErrorModuleFileRequired=You must select a Dolibarr module package file
 ErrorPhpCurlNotInstalled=The PHP CURL is not installed, this is essential to talk with Paypal
 ErrorFailedToAddToMailmanList=Failed to add record %s to Mailman list %s or SPIP base
 ErrorFailedToRemoveToMailmanList=Failed to remove record %s to Mailman list %s or SPIP base
@@ -176,7 +177,8 @@ ErrorStockIsNotEnoughToAddProductOnShipment=Stock is not enough for product %s t
 ErrorStockIsNotEnoughToAddProductOnProposal=Stock is not enough for product %s to add it into a new proposal.
 ErrorFailedToLoadLoginFileForMode=Failed to get the login key for mode '%s'.
 ErrorModuleNotFound=File of module was not found.
-ErrorFieldAccountNotDefinedForBankLine=Value for Accounting account not defined for source bank line %s
+ErrorFieldAccountNotDefinedForBankLine=Value for Accounting account not defined for source line id %s (%s)
+ErrorFieldAccountNotDefinedForInvoiceLine=Value for Accounting account not defined for invoice id %s (%s)
 ErrorBankStatementNameMustFollowRegex=Error, bank statement name must follow the following syntax rule %s
 ErrorPhpMailDelivery=Check that you don't use a too high number of recipients and that your email content is not similar to a Spam. Ask also your administrator to check firewall and server logs files for a more complete information.
 ErrorUserNotAssignedToTask=User must be assigned to task to be able to enter time consumed.