Transaction not yet indexed

421tmKPz6W5ftxNbTPFTtFSM4RRU3Un42syojY2jdqeET6oDp3R4E96qR2nUDBbE7uMJqcbZy5WgD3tPr9fHJrnF

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