Transaction not yet indexed

MDK3DGuMc9UXcpNxnohLyLhJVQqikRK6WKtsf7BDKmwqL8RuVMquq2NPHLZttME2Un6Q5fTBzCXKVJR5STGuBAA

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