Transaction not yet indexed

5B21WKCtaDMBHjbKzYM3RE7Zt5DXkoWYUtV8aEkfxb4MNW2pABN5ePUo2kW2TSS3r4eSRVPkq4mDHqcDR28e3x5Y

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