Transaction not yet indexed

SN88MfEnj68vRAV9FZa8etVydbyhPmroGAJkUGPkUFGfGYLnN9BvQjV4wnGLKqUdSPFv3gdmsYpmwDP5qQaXrPE

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