Transaction not yet indexed

21tkY1at3trqjf4zrUQ4b3Tfb3f6CNBwNWBH41zemQfd8aGBxdZwrNxkKHpkLH67uyzHdyBHLCeFnPrbX2cL2MSM

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