Diagnosis
You want to maintain the reference object physical sample of atesting schedule item. The system determined that the testing scheduleis not part of a stability study. You did not create this testingschedule using a follow-up function in a stability study.
You cannot maintain testing schedule items if the relevant testingschedule was not created using a follow-up function in a stabilitystudy.
When you manually create a new item in a testing schedule, the systemperforms the following checks:

• The testing schedule was created using a stability study


• The physical sample is a part of a storage condition for this stability
study

• No item currently exists for this physical sample in the testing
schedule

System Response
You cannot maintain the reference object in the testing schedule item.