Transaction not yet indexed

Mefff2EdXzMPcp9Eryv4NZ3kKt2ApmaMmZq96ahUwZhR94EH1UZQxMZfJJ5tVa2AaumyMQC4HezAMqBWXpuF5H7

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