the reasons why multichain reject externally signed TX

Question

Thank you for your answer. It states that the multichain exactly follows the bitcoin protocol (no modification in the entry hex).  

Please do you have any idea what else should be reason, that externaly signed TX (with input according the protocol), when send with sendrawtransaction returns:

    error code: -26

    error message:

   16: ConnectInputs failed

and same inputs entered to signrawtransaction leads to successful transaction.

Answer 1

Most likely, the unspent outputs spent by the transaction you created have already been spent elsewhere, so the transaction cannot be accepted by the node.