Transaction not yet indexed

MYW18qF7h3M3VjHhAv7iUZG1ddaEkz4QCMx3sqzacFdbHW2nZ1XaYnJR9dDDMY7M4m4fPoBvVRWMsGphw9pecq5

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