Transaction not yet indexed

MdNE1kDEX9qc9eFmRAUL7vqDspSEfoFCVzC7rTsc2s7MotFQkzA7TEL6gHMFnpFguBsuExAkpjkpi9nQb8KzquR

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