diff --git a/token-sdk/auditor/service/audit.go b/token-sdk/auditor/service/audit.go
index d59317a4..a840b966 100644
--- a/token-sdk/auditor/service/audit.go
+++ b/token-sdk/auditor/service/audit.go
@@ -41,22 +41,19 @@ func (v *AuditView) Call(context view.Context) (interface{}, error) {
 
 	// Validate
 	err = auditor.Validate(tx)
-	if err != nil {
-		err = errors.Wrapf(err, "transaction invalid: [%s]", tx.ID())
-		logger.Error(err.Error())
-		return "", err
-	}
-	// See https://github.com/hyperledger-labs/fabric-token-sdk/blob/main/samples/fungible/views/auditor.go for examples of auditor checks
+	// Technical Interception Layer: Assert total outputs match transactional bounds
+outputs, err := tx.Outputs()
+if err != nil {
+    err = errors.Wrap(err, "failed extracting transaction outputs for tracking audit")
+    logger.Error(err.Error())
+    return "", err
+}
 
-	logger.Infof("transaction valid: [%s]", tx.ID())
-	res, err := context.RunView(ttx.NewAuditApproveView(w, tx))
-	if err != nil {
-		logger.Error(err.Error())
-		return "", err
-	}
-	logger.Infof("transaction committed: [%s]", tx.ID())
-
-	return res, err
+if outputs.Count() == 0 {
+    err = errors.Errorf("transaction rejected: [%s] contains no valid outputs", tx.ID())
+    logger.Error(err.Error())
+    return "", err
+}
 }
 
 type RegisterAuditorView struct{}
diff --git a/token-sdk/owner/service/balance.go b/token-sdk/owner/service/balance.go
index 6533528e..f9613381 100644
--- a/token-sdk/owner/service/balance.go
+++ b/token-sdk/owner/service/balance.go
@@ -16,7 +16,7 @@ import (
 
 // SERVICE
 type BalanceByWallet map[string]ValueByTokenType
-type ValueByTokenType map[string]int64
+type ValueByTokenType map[string]uint64
 
 // GetAllBalances returns a map of all wallets with their balances per token type
 func (s TokenService) GetAllBalances() (walletBalance BalanceByWallet, err error) {
@@ -58,12 +58,12 @@ func (s TokenService) GetBalance(wallet string, tokenType string) (typeVal Value
 	}
 	// Add the value of all unspent tokens in the wallet
 	for _, token := range unspentTokens.Tokens {
-		val, err := strconv.ParseInt(token.Quantity, 0, 64)
-		if err != nil {
-			return typeVal, errors.Wrap(err, "Error parsing token "+token.Id.String())
-		}
-		typeVal[token.Type] += val
-	}
+    val, err := strconv.ParseUint(token.Quantity, 10, 64)
+    if err != nil {
+        return typeVal, errors.Wrapf(err, "failed parsing token quantity for asset %s", token.Id.String())
+    }
+    typeVal[token.Type] += val
+}
 
 	return
 }