Transaction not yet indexed

21t6SPGSvWBXVpqTrAXyB6mnk6RoVKqh39QSYQLP9cd7qSoWnCVw2MqBg3V1YF2uXYUXSvejdT5XcjZe4v5JDLKU

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