Transaction not yet indexed

21cf6aUuUfSEj3E9FvHDLokGkFfCvrWQRisA2tGLFUpZugjeJSyy4wLoG2RDtiRoXugbKtP2hWffWyf2dE57JCD4

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