Transaction not yet indexed

1sc91AWk3NuLmmKkvBuZP6zMqMA4v1uq7KrFLRr3TxtsxMx3PEa7HPL3ePGPyjx3EugVABfb5vGFu9uufsULYrd

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