SAP Audit Management - Unplanned Audit checkbox greyed out

Dear All,

I am facing this issue of Unplanned Audit coming in check box while creating an Audit(Tcode PLMD_AUDIT).

When i try to create an Audit it shows Unplanned Audit as check mark and disabled. Why is this so?

I have created the Audit Plan before and then while creating Audit Unplanned Audit CheckBox is coming greyed out.

Please tell about it.

Regards,

Deepanshu