0045943: Invoice generation when making Issue Sales Order for more than one order fails

diff --git a/src/org/openbravo/retail/posterminal/process/IssueSalesOrderLines.java b/src/org/openbravo/retail/posterminal/process/IssueSalesOrderLines.java
index 794ce250e..303be533e 100644
--- a/src/org/openbravo/retail/posterminal/process/IssueSalesOrderLines.java
+++ b/src/org/openbravo/retail/posterminal/process/IssueSalesOrderLines.java
@@ -112,9 +112,9 @@ public class IssueSalesOrderLines extends JSONProcessSimple {
 
     } catch (Exception e) {
       try {
+        log.error("Exception in IssueSalesOrderLines: " + e.getMessage(), e);
         jsonResponse.put(JsonConstants.RESPONSE_STATUS, JsonConstants.RPCREQUEST_STATUS_FAILURE);
         jsonResponse.put(JsonConstants.RESPONSE_ERRORMESSAGE, cleanUpMessage(e.getMessage()));
-        log.debug(e.getMessage());
       } catch (JSONException e1) {
         log.debug(e1.getMessage());
       }
diff --git a/web/org.openbravo.retail.posterminal/js/components/orderselector.js b/web/org.openbravo.retail.posterminal/js/components/orderselector.js
index 0e64c2f2f..397106ea1 100644
--- a/web/org.openbravo.retail.posterminal/js/components/orderselector.js
+++ b/web/org.openbravo.retail.posterminal/js/components/orderselector.js
@@ -877,7 +877,7 @@ enyo.kind({
                 var newline = {};
                 var prop;
                 for (prop in line) {
-                  if (line.hasOwnProperty(prop)) {
+                  if (Object.prototype.hasOwnProperty.call(line, prop)) {
                     newline[prop] = line[prop];
                   }
                 }
@@ -890,6 +890,8 @@ enyo.kind({
                 }
               });
 
+              const sequenceName = 'fullinvoiceslastassignednum';
+              const invoiceList = [];
               Object.keys(
                 _.groupBy(groupedLinesToPrepare, l => l.order)
               ).forEach(async key => {
@@ -900,25 +902,18 @@ enyo.kind({
                   .filter(l => l.order === key)
                   .flatMap(l => l.lines);
                 if (isInvoiceCreated(order, orderLines)) {
-                  const {
-                    sequenceName,
-                    sequenceNumber,
-                    documentNo
-                  } = await OB.MobileApp.model.getDocumentNo(
-                    'fullinvoiceslastassignednum'
-                  );
-                  order.invoiceSequenceName = sequenceName;
-                  order.invoiceSequenceNumber = sequenceNumber;
-                  order.invoiceDocumentNo = documentNo;
+                  invoiceList.push({
+                    order,
+                    orderLines
+                  });
                 }
               });
 
-              OB.Dal.transaction(function(tx) {
+              let issueSalesOrder = () => {
                 OB.UTIL.HookManager.executeHooks(
                   'OBPOS_PreIssueSalesOrder',
                   {
-                    orders: groupedLinesToPrepare,
-                    tx: tx
+                    orders: groupedLinesToPrepare
                   },
                   function() {
                     var process = new OB.DS.Process(
@@ -935,7 +930,7 @@ enyo.kind({
                               if (order.invoiceDocumentNo) {
                                 await OB.App.State.DocumentSequence.decreaseSequence(
                                   {
-                                    sequenceName: 'fullinvoiceslastassignednum'
+                                    sequenceName
                                   }
                                 );
                               }
@@ -1009,7 +1004,34 @@ enyo.kind({
                     );
                   }
                 );
-              });
+              };
+
+              const createInvoiceSequence = index => {
+                if (index === invoiceList.length) {
+                  issueSalesOrder();
+                } else {
+                  OB.App.State.DocumentSequence.increaseSequence({
+                    sequenceName
+                  }).then(() => {
+                    let {
+                      sequencePrefix,
+                      sequenceNumber
+                    } = OB.App.State.getState().DocumentSequence[sequenceName];
+                    const order = invoiceList[index].order;
+                    const documentNo = OB.App.State.DocumentSequence.Utils.calculateDocumentNumber(
+                      sequencePrefix,
+                      OB.Model.Order.prototype.includeDocNoSeperator ? '/' : '',
+                      OB.MobileApp.model.get('terminal').documentnoPadding,
+                      sequenceNumber
+                    );
+                    order.invoiceSequenceName = sequenceName;
+                    order.invoiceSequenceNumber = sequenceNumber;
+                    order.invoiceDocumentNo = documentNo;
+                    createInvoiceSequence(++index);
+                  });
+                }
+              };
+              createInvoiceSequence(0);
             }
           }
         );