diff --git a/htdocs/public/payment/newpayment.php b/htdocs/public/payment/newpayment.php
index 8a947ab3166..bfbde5f9a29 100644
--- a/htdocs/public/payment/newpayment.php
+++ b/htdocs/public/payment/newpayment.php
@@ -422,6 +422,7 @@ if ($action == 'charge' && ! empty($conf->stripe->enabled))
 	dol_syslog("POST vatnumber = ".$vatnumber, LOG_DEBUG, 0, '_stripe');
 
 	$error = 0;
+    $errormessage = '';
 
 	try {
 		$metadata = array(
@@ -555,60 +556,71 @@ if ($action == 'charge' && ! empty($conf->stripe->enabled))
 		print('Message is:' . $err['message'] . "\n");
 
 		$error++;
-		dol_syslog($e->getMessage(), LOG_WARNING, 0, '_stripe');
+		$errormessage="ErrorCard ".$e->getMessage()." err=".var_export($err, true);
+		dol_syslog($errormessage, LOG_WARNING, 0, '_stripe');
 		setEventMessages($e->getMessage(), null, 'errors');
 		$action='';
 	} catch (\Stripe\Error\RateLimit $e) {
 		// Too many requests made to the API too quickly
 		$error++;
-		dol_syslog($e->getMessage(), LOG_WARNING, 0, '_stripe');
+		$errormessage="ErrorRateLimit ".$e->getMessage();
+		dol_syslog($errormessage, LOG_WARNING, 0, '_stripe');
 		setEventMessages($e->getMessage(), null, 'errors');
 		$action='';
 	} catch (\Stripe\Error\InvalidRequest $e) {
 		// Invalid parameters were supplied to Stripe's API
 		$error++;
-		dol_syslog($e->getMessage(), LOG_WARNING, 0, '_stripe');
+		$errormessage="ErrorInvalidRequest ".$e->getMessage();
+		dol_syslog($errormessage, LOG_WARNING, 0, '_stripe');
 		setEventMessages($e->getMessage(), null, 'errors');
 		$action='';
 	} catch (\Stripe\Error\Authentication $e) {
 		// Authentication with Stripe's API failed
 		// (maybe you changed API keys recently)
 		$error++;
-		dol_syslog($e->getMessage(), LOG_WARNING, 0, '_stripe');
+		$errormessage="ErrorAuthentication ".$e->getMessage();
+		dol_syslog($errormessage, LOG_WARNING, 0, '_stripe');
 		setEventMessages($e->getMessage(), null, 'errors');
 		$action='';
 	} catch (\Stripe\Error\ApiConnection $e) {
 		// Network communication with Stripe failed
 		$error++;
-		dol_syslog($e->getMessage(), LOG_WARNING, 0, '_stripe');
+		$errormessage="ErrorApiConnection ".$e->getMessage();
+		dol_syslog($errormessage, LOG_WARNING, 0, '_stripe');
 		setEventMessages($e->getMessage(), null, 'errors');
 		$action='';
 	} catch (\Stripe\Error\Base $e) {
 		// Display a very generic error to the user, and maybe send
 		// yourself an email
 		$error++;
-		dol_syslog($e->getMessage(), LOG_WARNING, 0, '_stripe');
+		$errormessage="ErrorBase ".$e->getMessage();
+		dol_syslog($errormessage, LOG_WARNING, 0, '_stripe');
 		setEventMessages($e->getMessage(), null, 'errors');
 		$action='';
 	} catch (Exception $e) {
 		// Something else happened, completely unrelated to Stripe
 		$error++;
-		dol_syslog($e->getMessage(), LOG_WARNING, 0, '_stripe');
+		$errormessage="ErrorException ".$e->getMessage();
+		dol_syslog($errormessage, LOG_WARNING, 0, '_stripe');
 		setEventMessages($e->getMessage(), null, 'errors');
 		$action='';
 	}
 
+	$remoteip = getUserRemoteIP();
+
 	$_SESSION["onlinetoken"] = $stripeToken;
 	$_SESSION["FinalPaymentAmt"] = $amount;
 	$_SESSION["currencyCodeType"] = $currency;
 	$_SESSION["paymentType"] = '';
-	$_SESSION['ipaddress'] = getUserRemoteIP();  // Payer ip
+	$_SESSION['ipaddress'] = ($remoteip?$remoteip:'unknown');  // Payer ip
 	$_SESSION['payerID'] = is_object($customer)?$customer->id:'';
 	$_SESSION['TRANSACTIONID'] = is_object($charge)?$charge->id:'';
+	$_SESSION['errormessage'] = $errormessage;
 
-	dol_syslog("Action charge stripe result=".$error." ip=".$_SESSION['ipaddress'], LOG_DEBUG, 0, '_stripe');
+	dol_syslog("Action charge stripe ip=".$remoteip, LOG_DEBUG, 0, '_stripe');
 	dol_syslog("onlinetoken=".$_SESSION["onlinetoken"]." FinalPaymentAmt=".$_SESSION["FinalPaymentAmt"]." currencyCodeType=".$_SESSION["currencyCodeType"]." payerID=".$_SESSION['payerID']." TRANSACTIONID=".$_SESSION['TRANSACTIONID'], LOG_DEBUG, 0, '_stripe');
 	dol_syslog("FULLTAG=".$FULLTAG, LOG_DEBUG, 0, '_stripe');
+	dol_syslog("error=".$error." errormessage=".$errormessage, LOG_DEBUG, 0, '_stripe');
 	dol_syslog("Now call the redirect to paymentok or paymentko", LOG_DEBUG, 0, '_stripe');
 
 	if ($error)
diff --git a/htdocs/public/payment/paymentko.php b/htdocs/public/payment/paymentko.php
index 783493f375c..725c16f6655 100644
--- a/htdocs/public/payment/paymentko.php
+++ b/htdocs/public/payment/paymentko.php
@@ -107,7 +107,7 @@ $object = new stdClass();   // For triggers
  * View
  */
 
-dol_syslog("Callback url when an online payment is canceled. query_string=".(empty($_SERVER["QUERY_STRING"])?'':$_SERVER["QUERY_STRING"])." script_uri=".(empty($_SERVER["SCRIPT_URI"])?'':$_SERVER["SCRIPT_URI"]), LOG_DEBUG, 0, '_payment');
+dol_syslog("Callback url when an online payment is refused or canceled. query_string=".(empty($_SERVER["QUERY_STRING"])?'':$_SERVER["QUERY_STRING"])." script_uri=".(empty($_SERVER["SCRIPT_URI"])?'':$_SERVER["SCRIPT_URI"]), LOG_DEBUG, 0, '_payment');
 
 $tracepost = "";
 foreach($_POST as $k => $v) $tracepost .= "{$k} - {$v}\n";
@@ -126,6 +126,7 @@ if (! empty($_SESSION['ipaddress']))      // To avoid to make action twice
     $FinalPaymentAmt    = $_SESSION['FinalPaymentAmt'];
     // From env
     $ipaddress          = $_SESSION['ipaddress'];
+    $errormessage       = $_SESSION['errormessage'];
 
     // Appel des triggers
     include_once DOL_DOCUMENT_ROOT . '/core/class/interfaces.class.php';
@@ -173,8 +174,9 @@ if (! empty($_SESSION['ipaddress']))      // To avoid to make action twice
     	$content.='<u>'.$companylangs->transnoentitiesnoconv("TechnicalInformation").":</u><br>\n";
     	$content.=$companylangs->transnoentitiesnoconv("OnlinePaymentSystem").': <strong>'.$paymentmethod."</strong><br>\n";
     	$content.=$companylangs->transnoentitiesnoconv("ReturnURLAfterPayment").': '.$urlback."<br>\n";
+    	$content.=$companylangs->transnoentitiesnoconv("Error").': '.$errormessage."<br>\n";
     	$content.="<br>\n";
-    	$content.="tag=".$fulltag."\ntoken=".$onlinetoken." paymentType=".$paymentType." currencycodeType=".$currencyCodeType." payerId=".$payerID." ipaddress=".$ipaddress." FinalPaymentAmt=".$FinalPaymentAmt;
+    	$content.="tag=".$fulltag." token=".$onlinetoken." paymentType=".$paymentType." currencycodeType=".$currencyCodeType." payerId=".$payerID." ipaddress=".$ipaddress." FinalPaymentAmt=".$FinalPaymentAmt;
 
     	$ishtml=dol_textishtml($content);	// May contain urls