Transaction not yet indexed

5921nXApEBmYELC4MEAiyaE53eZ6FFdvTBNjM6Wpkv3L3W4RptdnjazFXEAvPqVG28MPk1UfMykCw34JaEVKBWA1

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