Transaction not yet indexed

28C91mvRnVaJUPfLFubYz6nDFjRXRGgxJSHxc4U9fRT4rF6HgNsQASUP84qcQLoKVMVDdSchMuUU8sW13AnFR1cT

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