[fix] Show payment button in purchase invoice
diff --git a/erpnext/accounts/doctype/purchase_invoice/purchase_invoice.js b/erpnext/accounts/doctype/purchase_invoice/purchase_invoice.js
index b91df4b..358cf39 100644
--- a/erpnext/accounts/doctype/purchase_invoice/purchase_invoice.js
+++ b/erpnext/accounts/doctype/purchase_invoice/purchase_invoice.js
@@ -24,7 +24,7 @@
 
 		if(!doc.is_return) {
 			if(doc.docstatus==1) {
-				if(doc.outstanding_amount < 0) {
+				if(doc.outstanding_amount > 0) {
 					this.frm.add_custom_button(__('Payment'), this.make_bank_entry, __("Make"));
 					cur_frm.page.set_inner_btn_group_as_primary(__("Make"));
 				}