diff --git a/base/src/org/compiere/model/CalloutInvoice.java b/base/src/org/compiere/model/CalloutInvoice.java
index b9f9b2ce0d..6f07ef390e 100644
--- a/base/src/org/compiere/model/CalloutInvoice.java
+++ b/base/src/org/compiere/model/CalloutInvoice.java
@@ -612,7 +612,7 @@ public class CalloutInvoice extends CalloutEngine
 		boolean IsSOTrx = "Y".equals(Env.getContext(Env.getCtx(), WindowNo, "IsSOTrx"));
 		if (!IsSOTrx)
 		{
-			BigDecimal TaxAmt = null;
+			BigDecimal TaxAmt = Env.ZERO; // teo_sarca: [ 1656829 ] Problem when there is not tax selected in vendor invoice
 			if (mField.getColumnName().equals("TaxAmt"))
 			{
 				TaxAmt = (BigDecimal)mTab.getValue("TaxAmt");