Transaction not yet indexed

121JS55gMkntc4ztCy1fJR6wCauDrNKMJpXheKy4q1hAdCcYc2BPgiTbnvKyDHaGoTqEGdDwvPUfMXb9gu4K96oo

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