Transaction not yet indexed

mb6Nghi4QNGUbDg3iZex8EdVdBEgiYSadSEzQg33hGQfmy4QobPiNRaXSc6KMv7vkMo5ayQd1ynY4KLiXfPXnpx

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