Transaction not yet indexed

21c6Qk6aMpr8LSo1zRpXuHkHqjHBAYbFTEx6yEwSpxT1DkT2D25ifCEefpzYVT3PoGkCfJSHpBLS7tw27vM1JLqS

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