Transaction not yet indexed

256TpQmqDCSiFwVbFoLJcds5Arp8uTUH9nw3nqrtUYWhN7UghdEsQp3v8E6b5PbzvUu2AGx3MSnpdLTX55vAUP18

The transaction signature is valid but not yet indexed by this RPC node, or the transaction failed before inclusion.