Transaction not yet indexed

556SmpCukFPxmfSRMef7CPwpeEsbWVPMuVZmBFvTDoaV7xTGbtg7cFuEf9PTKoz9p3WRVK5TCqhauL7fMpNH2Siy

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