Transaction not yet indexed

21LUk5MNtS9WDmKbvheCJYpR3hG5FPJqguy51xdip4Xw5vGqhBaXwdwRpiKbExuLTJ28Sthkk3zJL72Z718xgyn8

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