Transaction not yet indexed

5516nrgLLpmtLFWqj6oAeawygT2ngiKXxXq2VEst7PWBPaBBRVNRRPSEDwaqGxCzsU2TBMxvjxbrNjs2byDN9awW

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