Transaction not yet indexed

mRmE8sa14opnShhG21rXdS5ZfKjMTCadEx5wyJpVtTTNLWZUTcKGjMBiZrcH6m3mZCWcvChbVnpk8Zv14ytVpU3

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