Transaction not yet indexed

5Ku91soQujSrqd3p4fyE4eWbQaMfptLW31CKuQoUcKS2oL1SjEGWaqpRfqHKxpsa18qnDa8g31xFwpSvJAX4tJXi

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