Transaction not yet indexed

MM2zBsuUAWfz6L6TZX8WfmPyLJS2Jv2rVuLWuGNVFDzqbYnTjyabbbA8yrWG2kjSH8EELF3bUvGUZaNGY8s2pC6

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