Transaction not yet indexed

MefKMXjtSyHbZztsFr7hE178cgrrzaxiCpdSykZvPXeQPE7Kk2Jx6XW82txxzSnFPtvkFvaxW3R9gqWKzPaifUY

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