Position not available in Position Hierarchy

Hi Team,

I have created Position Hierarchy and only for Few Position I could find their Subordinate Position in the lookup and the same issue in the Position Screen too. When I tried to map the Reporting Position , I was not able to find the reporting Position name in the LOV. This issue persist only in PRODUCTION, whereas I could able to map all the subordinate position to their respective Supervisor Position in the Lower Instance which is the Clone of Production? Really confused. Someone Please could you suggest me a solution for this.

Thanks and Regards

Siva