Transaction not yet indexed

MDUqGyjnLRFZv9oq67DQWAdX7tAV2EUTFTfmiDmYDKpTUt9Y6e1R5Pm4PjpGdyutX5ZaUC21KSCA2S22AmcE467

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