Transaction not yet indexed

MK21hTTzDp6sWyfg91NvMYgTNbPcssRGV3NpB5S7ubnSmoQ2ETpexYAPQJLXJwZmx2TNytQfvTk5gYvMrLPFaWb

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