Transaction not yet indexed

21n6DMGCAZPKFsn9Yb4BRqNQFNW64xFFamBaJeuE5CR6A5wSDMjCmT6BDZykULPdevDJb5ZYoWwRkVXLGrKHRELm

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