Transaction not yet indexed

21c88mXKZ1sUXToBCJxJsHjkFfFRtPKKLbQojKMKxMPV6smyd7Eba4mxcrCvax4Sn8xbKH1LoNMqKDACA7Vk6XuP

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