What is the peer name If we add two member

[guru260]

I set up hyperledger fabric network using single member in amazon manged blockchain. I have used this rest api. It worked properly. Then I added one more member follwoing this document. I have added endorsement policy as below,

docker exec cli peer chaincode instantiate -o $ORDERER \ 
-C ourchannel -n myjointcc -v v0 \
-c '{"Args":["init","a","100","b","200"]}' \
--cafile /opt/home/managedblockchain-tls-chain.pem --tls \
-P "AND ('Member1ID.member','Member2ID.member')"

Now I need to add peer of new member in this config file I have added like "peers":["peer1", "peer2"]. But I am getting the following error in REST Server.

[2020-09-02 05:54:20.915] [ERROR] invoke-chaincode - Error: Peer with name "peer2" not assigned to this channel
    at Channel._getTargets (/var/www/html/network/node_modules/fabric-client/lib/Channel.js:3515:13)
    at Channel.sendTransactionProposal (/var/www/html/network/node_modules/fabric-client/lib/Channel.js:2791:26)
    at Object.invokeChaincode (/var/www/html/network/app/invoke-transaction.js:41:31)
    at <anonymous>
[2020-09-02 05:54:20.915] [ERROR] invoke-chaincode - Failed to invoke chaincode. cause:Error: Peer with name "peer2" not assigned to this channel

Help me what peer name should I use here for peer of newly added member.

[MCLDG]

@guru260 , the peer needs to be defined in the connection profile: https://github.com/aws-samples/non-profit-blockchain/blob/master/ngo-rest-api/connection-profile/ngo-connection-profile-template.yaml