Check the data for sample calculation for inspection type &1

What causes this issue?

For inspection type &v1&, you want to inspect without a task list and
without reference to a material specification or batch determination.
However, you also want the system to calculate the sample size.

System Response

The system issues an error message and will not allow you to continue with this transaction until the error is resolved.

How to fix this error?

Automatic calculation of the sample size is only advisable if you:
Define an inspection percentage
Set the "100% inspection" indicator
Enter a sampling procedure.
If you do not make one of these entries, the sample size is set to 0
when the inspection lot is created.

Error message extract from SAP system. Copyright SAP SE.