I was created Inspection plan in (QP01) for material.
That material was saled out and party rejected with some quality reasons.
Inspection lot created automatically.
Now system not accepting existing Inspection plan.And plan in created mode.
How to create Inspection plan to rejected material.
In the Quality Management (QM) component, you can inspect either based on an inspection plan, or (with certain limitations) based on material specifications that are valid on a company-wide basis.
The use of the material specification depends on the settings of the following indicators in the inspection setup of the material master:
Inspect by charac.
Insp. with mat. spec
Insp. with task list
You use the last two indicators to define how the inspection should take place. In addition, the material specification can either completely replace the inspection plan or supplement it.
With material specification
In Customizing for inspection types you must enter the operation data for the material specification (operation number and control key) and you must enter the number range for the inspection characteristics at client level.
You create a material specification with master inspection characteristics.
You create a dummy inspection plan that only contains one operation with one work center.
In the inspection setup (Quality Management view of the material master), set the indicators Insp. with task list and Insp. with mat spec.
You cannot dynamically modify the inspection scope.
You cannot use all characteristic types.
You must completely maintain master inspection characteristics (reference characteristic or complete copy model).
pl refer the link
Thanks and regards