Transaction not yet indexed

28DGAcifN2oUFWNEcq8qqft89aGT5sk4H7iMu6VCeU86kpWgSpMvfxc4MsrfjgSkVP5T3K31Ccf1CS3bgtCA2Bu7

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