Transaction not yet indexed

Nnku87YVMnnvae8nS1QDLL5tk5EPCCgMvUDM1iREpb1XpMZApADR3LDCrBmvn6gtvXk3zFBMvNhQDcsbCQpsvpH

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