Transaction not yet indexed

MLNGUbGHdruARUpaBbwJ13mFjE2Ye3URdJjRuFfViW97RGRVGmjqrJcdcWS18d97QEwyNF8zfkQrpPZUEb9mTmG

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