Transaction not yet indexed

5n99cSVSirxBiZs9mmrGv4SEpDN6aApL7aUcdK2f17msduN7EagER16Nvvwq18PyLGJpzKHwKH1rfLmeU9g4RKp5

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