Transaction not yet indexed

1SYMJSWcatacFbFrTi3GhUWqrBLC663b5mvG4TqdSSbsoe6jPqRiB5NgiLFPXWPqQ5UAEv7WNgNKVkXGo8knLB6

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