diff --git a/src/main/java/zw/qantra/tm/domain/models/Transaction.java b/src/main/java/zw/qantra/tm/domain/models/Transaction.java
index c7c63f4..d240f21 100644
--- a/src/main/java/zw/qantra/tm/domain/models/Transaction.java
+++ b/src/main/java/zw/qantra/tm/domain/models/Transaction.java
@@ -58,6 +58,13 @@ public class Transaction extends BaseEntity {
     private String paymentProcessorName;
     private String providerImage;
     private String paymentProcessorImage;
+
+    private String erpSalesRef;
+    private String erpJournalRef;
+    private String erpSalesPaymentRef;
+    private String erpPurchaseRef;
+    private String erpPurchasePaymentRef;
+
     @Enumerated(EnumType.STRING)
     private RequestType type;
     @Enumerated(EnumType.STRING)
diff --git a/src/main/java/zw/qantra/tm/domain/services/TransactionService.java b/src/main/java/zw/qantra/tm/domain/services/TransactionService.java
index d8b2d65..480808e 100644
--- a/src/main/java/zw/qantra/tm/domain/services/TransactionService.java
+++ b/src/main/java/zw/qantra/tm/domain/services/TransactionService.java
@@ -61,6 +61,7 @@ public class TransactionService {
         String label = transaction.getType() + "_" +
                 provider.getIntegrationProcessorLabel();
         logger.info("label: {}", label);
+        transaction.setIntegrationProcessorLabel(provider.getIntegrationProcessorLabel()); // for reference purposes
         
         TransactionProcessorInterface transactionProcessorInterface =
                 (TransactionProcessorInterface) paymentProcessorFactory.getPaymentProcessor(label);
diff --git a/src/main/java/zw/qantra/tm/domain/services/processors/handlers/CalculateChargesHandler.java b/src/main/java/zw/qantra/tm/domain/services/processors/handlers/CalculateChargesHandler.java
index f28f74f..d8d447c 100644
--- a/src/main/java/zw/qantra/tm/domain/services/processors/handlers/CalculateChargesHandler.java
+++ b/src/main/java/zw/qantra/tm/domain/services/processors/handlers/CalculateChargesHandler.java
@@ -50,7 +50,9 @@ public class CalculateChargesHandler implements LogicHandler<Transaction, Transa
                 }
                 if(isPresent) break; // we've found a matching condition, no need to check rest of conditions
             }
-            if(!isPresent) continue; // if we did not find a match, means this charge does not apply to this transaction
+            // if we did not find a match, means this charge does not apply to this transaction
+            // also implies there is no need to check exemptions
+            if(!isPresent) continue; 
 
             boolean isExempt = false;
             for (ChargeCondition chargeCondition: charge.getExcludes()){
diff --git a/src/main/java/zw/qantra/tm/domain/services/processors/handlers/erp/SalesInvoiceHandler.java b/src/main/java/zw/qantra/tm/domain/services/processors/handlers/erp/SalesInvoiceHandler.java
index 475e6bd..e34fc48 100644
--- a/src/main/java/zw/qantra/tm/domain/services/processors/handlers/erp/SalesInvoiceHandler.java
+++ b/src/main/java/zw/qantra/tm/domain/services/processors/handlers/erp/SalesInvoiceHandler.java
@@ -14,7 +14,6 @@ import zw.qantra.tm.domain.services.processors.handlers.LogicHandler;
 public class SalesInvoiceHandler implements LogicHandler<Transaction, Transaction>{
     Logger logger = LoggerFactory.getLogger(SalesInvoiceHandler.class);
     
-
     @Override
     public Transaction process(Transaction transaction) {
         logger.info("Processing sales invoice for transaction: {}", transaction.getReference());
diff --git a/src/main/java/zw/qantra/tm/domain/services/processors/payments/EcocashRemotePaymentProcessor.java b/src/main/java/zw/qantra/tm/domain/services/processors/payments/EcocashRemotePaymentProcessor.java
index 736750e..12d4990 100644
--- a/src/main/java/zw/qantra/tm/domain/services/processors/payments/EcocashRemotePaymentProcessor.java
+++ b/src/main/java/zw/qantra/tm/domain/services/processors/payments/EcocashRemotePaymentProcessor.java
@@ -42,7 +42,10 @@ public class EcocashRemotePaymentProcessor implements TransactionProcessorInterf
         String token = restService.getMerchantToken();
 
         // send total less gateway charges
-        BigDecimal totalAmount = transaction.getAmount().add(transaction.getTax()).add(transaction.getCharge());
+        BigDecimal totalAmount = transaction.getAmount()
+            .add(transaction.getTax())
+            .add(transaction.getCharge())
+            .add(transaction.getGatewayCharge());
 
         String concat = clientId+
             encryptionKey+
diff --git a/src/main/java/zw/qantra/tm/domain/services/processors/payments/MPGSWebPaymentProcessor.java b/src/main/java/zw/qantra/tm/domain/services/processors/payments/MPGSWebPaymentProcessor.java
index 3886eb0..ce80bde 100644
--- a/src/main/java/zw/qantra/tm/domain/services/processors/payments/MPGSWebPaymentProcessor.java
+++ b/src/main/java/zw/qantra/tm/domain/services/processors/payments/MPGSWebPaymentProcessor.java
@@ -43,7 +43,10 @@ public class MPGSWebPaymentProcessor implements TransactionProcessorInterface {
         String token = restService.getMerchantToken();
 
         // send total less gateway charges
-        BigDecimal totalAmount = transaction.getAmount().add(transaction.getTax()).add(transaction.getCharge());
+        BigDecimal totalAmount = transaction.getAmount()
+            .add(transaction.getTax())
+            .add(transaction.getCharge())
+            .add(transaction.getGatewayCharge());
 
         String concat = clientId+
             encryptionKey+
diff --git a/src/main/java/zw/qantra/tm/domain/services/processors/payments/StewardWebPaymentProcessor.java b/src/main/java/zw/qantra/tm/domain/services/processors/payments/StewardWebPaymentProcessor.java
index 3610814..e5b5c2b 100644
--- a/src/main/java/zw/qantra/tm/domain/services/processors/payments/StewardWebPaymentProcessor.java
+++ b/src/main/java/zw/qantra/tm/domain/services/processors/payments/StewardWebPaymentProcessor.java
@@ -1,5 +1,6 @@
 package zw.qantra.tm.domain.services.processors.payments;
 
+import java.math.BigDecimal;
 import java.nio.charset.StandardCharsets;
 import java.security.MessageDigest;
 import java.security.NoSuchAlgorithmException;
@@ -41,10 +42,15 @@ public class StewardWebPaymentProcessor implements TransactionProcessorInterface
         logger.info("processing transaction");
         String token = restService.getMerchantToken();
 
+        BigDecimal totalAmount = transaction.getAmount()
+            .add(transaction.getTax())
+            .add(transaction.getCharge())
+            .add(transaction.getGatewayCharge());
+
         String concat = clientId+
             encryptionKey+
             transaction.getCreditPhone()+
-            transaction.getAmount();
+            totalAmount;
 
         String hex = getHash(concat);
 
@@ -52,7 +58,7 @@ public class StewardWebPaymentProcessor implements TransactionProcessorInterface
                 .clientId(clientId)
                 .clientSecret(clientSecret)
                 .phone(transaction.getCreditPhone())
-                .amount(transaction.getAmount().toString())
+                .amount(totalAmount.toString())
                 .currency(transaction.getDebitCurrency().toString())
                 .hash(hex)
                 .authType("WEB")
diff --git a/src/main/resources/application-vusa.properties b/src/main/resources/application-vusa.properties
new file mode 100644
index 0000000..a7af74a
--- /dev/null
+++ b/src/main/resources/application-vusa.properties
@@ -0,0 +1,2 @@
+# sbz.merchant.url=http://localhost:24000/v1
+sbz.merchant.url=https://api.stewardpay.co.zw/lab/v2
diff --git a/src/main/resources/liquibase-diff-changeLog.xml b/src/main/resources/liquibase-diff-changeLog.xml
new file mode 100644
index 0000000..e44c53a
--- /dev/null
+++ b/src/main/resources/liquibase-diff-changeLog.xml
@@ -0,0 +1,31 @@
+<?xml version="1.1" encoding="UTF-8" standalone="no"?>
+<databaseChangeLog xmlns="http://www.liquibase.org/xml/ns/dbchangelog" xmlns:ext="http://www.liquibase.org/xml/ns/dbchangelog-ext" xmlns:pro="http://www.liquibase.org/xml/ns/pro" xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance" xsi:schemaLocation="http://www.liquibase.org/xml/ns/dbchangelog-ext http://www.liquibase.org/xml/ns/dbchangelog/dbchangelog-ext.xsd http://www.liquibase.org/xml/ns/pro http://www.liquibase.org/xml/ns/pro/liquibase-pro-latest.xsd http://www.liquibase.org/xml/ns/dbchangelog http://www.liquibase.org/xml/ns/dbchangelog/dbchangelog-latest.xsd">
+    <changeSet author="vk (generated)" id="1756328366833-1">
+        <addColumn tableName="transaction">
+            <column name="erp_journal_ref" type="varchar(255)"/>
+        </addColumn>
+    </changeSet>
+    <changeSet author="vk (generated)" id="1756328366833-2">
+        <addColumn tableName="transaction">
+            <column name="erp_purchase_payment_ref" type="varchar(255)"/>
+        </addColumn>
+    </changeSet>
+    <changeSet author="vk (generated)" id="1756328366833-3">
+        <addColumn tableName="transaction">
+            <column name="erp_purchase_ref" type="varchar(255)"/>
+        </addColumn>
+    </changeSet>
+    <changeSet author="vk (generated)" id="1756328366833-4">
+        <addColumn tableName="transaction">
+            <column name="erp_sales_payment_ref" type="varchar(255)"/>
+        </addColumn>
+    </changeSet>
+    <changeSet author="vk (generated)" id="1756328366833-5">
+        <addColumn tableName="transaction">
+            <column name="erp_sales_ref" type="varchar(255)"/>
+        </addColumn>
+    </changeSet>
+    <changeSet author="vk (generated)" id="1756328366833-6">
+        <dropColumn columnName="erp_ref" tableName="transaction"/>
+    </changeSet>
+</databaseChangeLog>
diff --git a/src/main/resources/liquibase-lab.properties b/src/main/resources/liquibase-lab.properties
index 2dcb40d..40cdf32 100644
--- a/src/main/resources/liquibase-lab.properties
+++ b/src/main/resources/liquibase-lab.properties
@@ -1,6 +1,6 @@
 changeLogFile=src/main/resources/liquibase-diff-changeLog.xml
-url=jdbc:postgresql://173.212.247.232:5432/qpay?serverTimezone=Africa/Harare&useLegacyDatetimeCode=false
-username=root
+url=jdbc:postgresql://173.212.247.232:5532/qpay?serverTimezone=Africa/Harare&useLegacyDatetimeCode=false
+username=postgres
 password=zdDZMzq6F4B4L1IUl
 
 driver=org.postgresql.Driver