Transaction not yet indexed

Mpx3NTTSR8ubso2G89ZtdZPNTESvHAPcDkMWanfY9Nrj5Q2suYdTzjbdHApxZHPqKyhJD1UWNvsQbt9WTPJ5qpw

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