The status of a PI sheet can only be set to Complete if:
All entries required on the PI sheet have been made
All calculations have been carried out successfully
If a process cannot be carried out according to plan, some of this data may not be available. In this case, you can deactivate individual process instructions in the PI sheet; see Activating/Deactivating Process Instructions in ABAP List-Based PI Sheets .
Process instructions which have been deactivated are no longer taken into account when the PI sheet is checked, and the PI sheet can be set to "complete".
A process instruction can only be deactivated if the corresponding data has not yet been reported.
A deactivated process instruction can no longer be processed in the PI sheet. You can, however, reactivate the process instruction.