Transaction not yet indexed

u21b6sAvFbL9UBkWZSpMfHyTrXSkM5NhFgbKemRGjcBeEqjVAqrR8yNedmsrhZrh674SAz52PQnr5DUUPRJNPMJ

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