Transaction not yet indexed

21Cm8ffxgMZHTh23m84hcTS7fpht2NCuTs8WVeRZkWwSLyiUEGKexxn3SsRWbSE7FdbFYRWSAKtbaY3YGrz5JJwT

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