Transaction not yet indexed

MBkkc18iNeoWfo2HctPKJhKyLJvMov7M4yGWMvGmF3eWRC3UkN4s6Wofr8qPjbYdPRW89TYxQXK52B44aSmr5jn

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