Transaction not yet indexed

MM2ExmDuQXJJUmAo5UB4VL6aBwoCBDo9ZktUkxyHXDFaTGU4DULswu6BeZcmN4wew595Mz9SXuJcFfs1bagtbyA

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