Transaction not yet indexed

NMp51s4xFuWfCxtkBzCp8p5idJx59mWXb5AVHmwfxUoxGECEP76GUscVaDMfEDhV1UNiNMjc9YwZwpDPo9DjZCt

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