Index: ssts-web/src/main/webapp/disinfectsystem/invoice/invoicePlanExtractedForm.js
===================================================================
diff -u -r16516 -r16521
--- ssts-web/src/main/webapp/disinfectsystem/invoice/invoicePlanExtractedForm.js	(.../invoicePlanExtractedForm.js)	(revision 16516)
+++ ssts-web/src/main/webapp/disinfectsystem/invoice/invoicePlanExtractedForm.js	(.../invoicePlanExtractedForm.js)	(revision 16521)
@@ -977,6 +977,7 @@
 	    	editor : new Ext.form.NumberField({
 				allowBlank : false,
 				allowNegative : false,
+				minValue :1,
 				style : 'text-align: left',
 				allowDecimals : false,
 				listeners : {