Transaction not yet indexed

SMtzAFCx2rERL8R1ZomjCYTXhsxSWc83yaVSDqUC1CFEiLGUirKmrtHzAxQkh1rQPFWQX2XQQim7AXCMSbnPJXJ

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