Transaction not yet indexed

M21ysiqc5kQrnMwGxk1bdwrNx6q4QLoopiQc6tc7JXfaofQEvrg9hqEXyTDnEmK1LG7RVJs5DUeVB8ZD6LcxkvE

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