Transaction not yet indexed

28tcgkk21cgQZYG6xHQU1N2gJ6NWTWSCubu2vAZytubg6WXfJJBUTqKLZYNcPwXNvcVr83Tcs4EkLEcDtePHhATX

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