Transaction not yet indexed

MkD4c6AidmJ2FqBtBVQ8fggyxsRx6cCVw7N64xisbkpE1Adbcffd7mGmjibKY5rWCsQFRt5ypyYTabvYuFpQsUQ

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