Transaction not yet indexed

Me91YCDhWhfL2XxFRpcgsRd4FXrfPQuqpCSRuRjLaNrde2PNEwgEz2iJEQDkLU2cy9gWDU8YSCygzVSnvtNVEke

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