Transaction not yet indexed

21Xb5ckpDSu9cjz2rEqJEeCKGHs59KsoUJtYKhFVxFNz7cgs5doM6aUTjp8AgdgrcG2H5kkLmcP2HbeZBKERmMKc

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