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I used the following command to pass a monero transaction with the daemon :

{"jsonrpc":"2.0","id":"0","method":"transfer","params":{"account_index":2,"destinations":[{"amount":100000000,"address":"9wNgSYy2F9qPZu7KBjvsFgZLTKE2TZgEpNFbGka9gA5zPmAXS35QzzYaLKJRkYTnzgArGNX7TvSqZC87tBLwtaC5RQgJ8rm"}]}}

But I need a command whose I can define the source address from which I can send the coin monero.

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Each account in a wallet has a number, and each subaddress in an account has a number.

You can add the account_index and subaddr_indices options when calling the transfer method to indicate from which subaddress (or subaddresses) the coins will be taken.

For example to use subaddress n°3 in account n°2 as source of the coins:

{"jsonrpc":"2.0",
 "id":"0",
 "method":"transfer",
 "params":{"account_index":2,
           "subaddr_indices":[3],
           "destinations":[{"amount":100000000, "address":"9wNgSYy2F9qPZu7KBjvsFgZLTKE2TZgEpNFbGka9gA5zPmAXS35QzzYaLKJRkYTnzgArGNX7TvSqZC87tBLwtaC5RQgJ8rm"}],
           "get_tx_key":true}}

The documentation of the transfer method is here.

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  • I already tried with these params but the transaction did not send and this error message is returned : { "error": { "code": -16, "message": "tx not possible" }, "id": "0", "jsonrpc": "2.0" }
    – MoneroDev
    Jul 10, 2018 at 9:29
  • Have you checked if the source subaddress contains enough funds for the amount sent and the fee? Are there more details about the error in the logs of monero-wallet-rpc?
    – glv
    Jul 10, 2018 at 12:52
  • yes the address contains enough mony for the transaction and all the params is correct but the same errors
    – MoneroDev
    Jul 10, 2018 at 13:47

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