Transaction not yet indexed

21NbxmJVFrCTuCcMNdvj7UJgBMNg2B5VxTHqpmE7GRQvL43uMK6epKMsFGP3zVSVEFthNaDGqMcnwFnfYZE87xUg

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