fix: #9

locale.xml

@@ -82,6 +82,15 @@
             <de><![CDATA[Steuernummer]]></de>
             <en><![CDATA[Tax number]]></en>
         </locale>
+
+        <locale name="user.profile.userdata.title">
+            <de><![CDATA[Firmendaten]]></de>
+            <en><![CDATA[Company data]]></en>
+        </locale>
+        <locale name="user.profile.userdata.vatId">
+            <de><![CDATA[Umsatzsteuer-ID]]></de>
+            <en><![CDATA[VAT ID]]></en>
+        </locale>
     </groups>
 
     <groups name="quiqqer/erp" datatype="php">

src/QUI/ERP/Accounting/Calc.php

@@ -10,6 +10,7 @@
 use QUI\ERP\Money\Price;
 use QUI\Interfaces\Users\User as UserInterface;
 use QUI\ERP\Accounting\Invoice\Invoice;
+use QUI\ERP\Accounting\Invoice\InvoiceTemporary;
 use QUI\ERP\Accounting\Invoice\Handler;
 
 /**
@@ -483,7 +484,7 @@ public static function calculateInvoicePayments(Invoice $Invoice)
     /**
      * Calculates the individual amounts paid of an invoice / order
      *
-     * @param Invoice|QUI\ERP\Order\AbstractOrder $ToCalculate
+     * @param InvoiceTemporary|Invoice|QUI\ERP\Order\AbstractOrder $ToCalculate
      * @return array
      *
      * @throws QUI\ERP\Exception
@@ -506,6 +507,10 @@ public static function calculatePayments($ToCalculate)
         $transactions = $Transactions->getTransactionsByHash($ToCalculate->getHash());
         $calculations = $ToCalculate->getArticles()->getCalculations();
 
+        if (!isset($calculations['sum'])) {
+            $calculations['sum'] = 0;
+        }
+
         $paidData = [];
         $paidDate = 0;
         $sum      = 0;
@@ -570,7 +575,6 @@ public static function calculatePayments($ToCalculate)
         $ToCalculate->setAttribute('paid', $sum);
         $ToCalculate->setAttribute('toPay', $toPay - $paid);
 
-
         if ($ToCalculate->getAttribute('paid_status') === Handler::TYPE_INVOICE_REVERSAL
             || $ToCalculate->getAttribute('paid_status') === Handler::TYPE_INVOICE_CANCEL
         ) {
@@ -606,7 +610,7 @@ public static function calculatePayments($ToCalculate)
     /**
      * Is the object allowed for calculation
      *
-     * @param Invoice|QUI\ERP\Order\AbstractOrder $ToCalculate
+     * @param InvoiceTemporary|Invoice|QUI\ERP\Order\AbstractOrder $ToCalculate
      * @return bool
      */
     public static function isAllowedForCalculation($ToCalculate)
@@ -615,6 +619,10 @@ public static function isAllowedForCalculation($ToCalculate)
             return true;
         }
 
+        if ($ToCalculate instanceof InvoiceTemporary) {
+            return true;
+        }
+
         if ($ToCalculate instanceof QUI\ERP\Order\AbstractOrder) {
             return true;
         }
@@ -728,6 +736,10 @@ public static function calculateTotalVatOfInvoice($vatArray)
             $vatArray = json_decode($vatArray, true);
         }
 
+        if (!is_array($vatArray)) {
+            return 0;
+        }
+
         return array_sum(
             array_map(function ($vat) {
                 return $vat['sum'];

src/QUI/ERP/FrontendUsers/profileData.html

 <section class="quiqqer-frontendUsers-userdata-section quiqqer-erp-userProfile-vat">
     <header>
-        <h2>{locale group="quiqqer/tax" var="user.profile.userdata.title"}</h2>
+        <h2>{locale group="quiqqer/erp" var="user.profile.userdata.title"}</h2>
     </header>
 
     <label class="quiqqer-order-customerData-edit-vatId">
         <span class="quiqqer-frontendUsers-userdata-label">
-            {locale group="quiqqer/order" var="vatId"}
+            {locale group="quiqqer/erp" var="user.profile.userdata.vatId"}
         </span>
         <input type="text"
                name="vatId"