Transaction not yet indexed

MefCpFnAf6k8auc8W4QS46E2NqPCxLrL9UdVbvAtCJvFHYXoPq1zfeppWJm6XCuE3xSM6V4DfhzNcMow7sZvkTQ

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