From 8c7d3b8349f9f3199819917ff33eac2b3c0a77d7 Mon Sep 17 00:00:00 2001
From: Troy McConaghy <troy@bigchaindb.com>
Date: Thu, 26 Jul 2018 14:26:12 +0200
Subject: [PATCH] Problem: JSON schema allows output amount "0"

Soluton: Change the regex to allow "1" to "9"x20 but not "0"
---
 bigchaindb/common/schema/transaction_v2.0.yaml | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/bigchaindb/common/schema/transaction_v2.0.yaml b/bigchaindb/common/schema/transaction_v2.0.yaml
index 0a22b810..913a3cf5 100644
--- a/bigchaindb/common/schema/transaction_v2.0.yaml
+++ b/bigchaindb/common/schema/transaction_v2.0.yaml
@@ -79,7 +79,7 @@ definitions:
     properties:
       amount:
         type: string
-        pattern: "^[0-9]{1,20}$"
+        pattern: "^[1-9][0-9]{0,19}$"
       condition:
         type: object
         additionalProperties: false