Transaction not yet indexed

5Z21U4KymZwAcACZWvaKNP6FFawsRXeMUovRQo1FPXdBJdbDkM7LPaDZ5pEhTvpdSoAbWTgfbioKcNdpxaJyey3J

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