Transaction not yet indexed

MUM3zek4fTJTaz1pV7npFfoMJuxmkkfBETrpDuK7MBbGd9p3i9UPfirVx77PyCX2ZZXZTFJESVWwgYwoHFm4ebk

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