Transaction not yet indexed

MkwEfLuKpJkAvsVwtkEWz5rHPjygV5Hf7zn2drXBrSsZo68NvgngkTDazz4Eh9DA1z1QaCcYHRPyASfNChqw2FC

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