Transaction not yet indexed

MRm8tpajTc8iVA9kJATsBEQCbgEyn2wSU9LdXocVj45eW1uzyqxEWx1cjNMCkQVFAXZsFLcNEzF2Me4NvLUXvW1

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