Transaction not yet indexed

21TgU6Bihq6iWHX2RyB2f9GNqM66bAPG4bBwypDgT4eyGEmCBB5MGT1Uqzz4CH2LR1zfbSbCtgJRXkGLHLouFNU6

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