diff --git a/examples/cartrade/config/default.json b/examples/cartrade/config/default.json
index 832de94451..394f2a7435 100644
--- a/examples/cartrade/config/default.json
+++ b/examples/cartrade/config/default.json
@@ -23,8 +23,8 @@
             "submitter": {
                 "name": "admin",
                 "secret": "adminpw",
-                "certificate": "-----BEGIN CERTIFICATE-----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\n4suQPQIgVGKIiQBQDGlOQHkt9lqno/yFiFZSjzZSS24LFIJNKU4=\n-----END CERTIFICATE-----\n",
-                "pkey": "-----BEGIN PRIVATE KEY-----\nMIGHAgEAMBMGByqGSM49AgEGCCqGSM49AwEHBG0wawIBAQQgQ3pbxM94ZzHPEHW7\n5TQ1N/WfCLSgqY97dfyF34WiJz2hRANCAATROM5gNB8NsA5TfBg2/GB5pMT+vzwG\nJ47lXjK7/oQmTjIEexzJpEKestn16rIVrn7cblXSYDuFtPDjyZ14wCuw\n-----END PRIVATE KEY-----\n"
+                "certificate": "-----BEGIN CERTIFICATE-----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\nXlOMAiBawCF3lIBzs/mi9kCL58M6SkddfKievhfi0/obf0sGEw==\n-----END CERTIFICATE-----\n",
+                "pkey": "-----BEGIN PRIVATE KEY-----\nMIGHAgEAMBMGByqGSM49AgEGCCqGSM49AwEHBG0wawIBAQQgMNMJbHDw6+FcclPa\nzGWYItb0g+VnXAAVMCv1RFILciOhRANCAARyy9Tav5N3t20K5lvNbmLqD1hnkj33\n8+xuEFqOXzU/pDstSnTIbgo8/5EzVA/tWrXuvFNP/yN91AYcGbKM0IZk\n-----END PRIVATE KEY-----\n"
             },
             "channelName": "mychannel",
             "chaincodeID": "fabcar"
diff --git a/examples/discounted-cartrade/BusinessLogicCartrade.ts b/examples/discounted-cartrade/BusinessLogicCartrade.ts
index 9814ed3e32..c568c5ad6d 100644
--- a/examples/discounted-cartrade/BusinessLogicCartrade.ts
+++ b/examples/discounted-cartrade/BusinessLogicCartrade.ts
@@ -93,7 +93,7 @@ export class BusinessLogicCartrade extends BusinessLogicBase {
             // this.useValidator = JSON.parse(transactionManagement.getValidatorToUse(requestInfo.businessLogicID));
 
             // this.dummyTransaction(requestInfo, tradeInfo);
-            // this.firstTransaction(requestInfo, tradeInfo);
+            this.firstTransaction(requestInfo, tradeInfo);
         })
         .catch(err => {
             logger.error(err);
diff --git a/examples/discounted-cartrade/README.md b/examples/discounted-cartrade/README.md
index 051926121e..e24fd4434b 100644
--- a/examples/discounted-cartrade/README.md
+++ b/examples/discounted-cartrade/README.md
@@ -206,7 +206,7 @@ Assume there exist "sample_Userside.log" which is a result file of "sample_Users
 5. Remove a line break on the last line of myproof.json.
 6. Creates a new file "discounted-cartrade_request_body.json"
 7. Please write the following content in "discounted-cartrade_request_body.json"
-   - {"businessLogicID":"guks32pf","tradeParams":["0xec709e1774f0ce4aba47b52a499f9abaaa159f71", "0x9d624f7995e8bd70251f8265f2f9f2b49f169c55", "fuser01", "fuser02", "CAR1", "<<the content of myproof.json>>"],"authParams":["fujitsu"]}
+   - {"businessLogicID":"guks32pf","tradeParams":["0xec709e1774f0ce4aba47b52a499f9abaaa159f71", "0x9d624f7995e8bd70251f8265f2f9f2b49f169c55", "fuser01", "fuser02", "CAR1", "<<the content of myproof.json>>"],"authParams":["<<company name>>"]}
 
 ### How to exec this app (in host)
 1. Go to the directory one level above cactus
diff --git a/examples/discounted-cartrade/config/default.json b/examples/discounted-cartrade/config/default.json
index 832de94451..394f2a7435 100644
--- a/examples/discounted-cartrade/config/default.json
+++ b/examples/discounted-cartrade/config/default.json
@@ -23,8 +23,8 @@
             "submitter": {
                 "name": "admin",
                 "secret": "adminpw",
-                "certificate": "-----BEGIN CERTIFICATE-----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\n4suQPQIgVGKIiQBQDGlOQHkt9lqno/yFiFZSjzZSS24LFIJNKU4=\n-----END CERTIFICATE-----\n",
-                "pkey": "-----BEGIN PRIVATE KEY-----\nMIGHAgEAMBMGByqGSM49AgEGCCqGSM49AwEHBG0wawIBAQQgQ3pbxM94ZzHPEHW7\n5TQ1N/WfCLSgqY97dfyF34WiJz2hRANCAATROM5gNB8NsA5TfBg2/GB5pMT+vzwG\nJ47lXjK7/oQmTjIEexzJpEKestn16rIVrn7cblXSYDuFtPDjyZ14wCuw\n-----END PRIVATE KEY-----\n"
+                "certificate": "-----BEGIN CERTIFICATE-----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\nXlOMAiBawCF3lIBzs/mi9kCL58M6SkddfKievhfi0/obf0sGEw==\n-----END CERTIFICATE-----\n",
+                "pkey": "-----BEGIN PRIVATE KEY-----\nMIGHAgEAMBMGByqGSM49AgEGCCqGSM49AwEHBG0wawIBAQQgMNMJbHDw6+FcclPa\nzGWYItb0g+VnXAAVMCv1RFILciOhRANCAARyy9Tav5N3t20K5lvNbmLqD1hnkj33\n8+xuEFqOXzU/pDstSnTIbgo8/5EzVA/tWrXuvFNP/yN91AYcGbKM0IZk\n-----END PRIVATE KEY-----\n"
             },
             "channelName": "mychannel",
             "chaincodeID": "fabcar"