Transaction not yet indexed

28So5nuUZFns5eqveiKgAYV6MgT5ZJDxZd4FkxsZ492dqnifGEtTbLGQwQYkAJd1xwP6aLw5WABSoBMgZmTXfCeF

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