Transaction not yet indexed

ist9JS81pBWNEMerxYZKKz4u6A2TZwHVDxsiz8DJDucQfQH18ixtwTmHcQeaVELP1SUPU8aNZf2htjURRNKAdnT

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