Sampling Plan 
Instruction containing the required information about the sample size.
For every value of the acceptable quality level (AQL value), the sampling scheme contains a table of sampling plans for each inspection severity. This table is sorted according to the lot size.
The lot size gives the quantity of the population (measured in sample units) as an upper limit, up to which the relevant sampling plan applies.
In every table with sampling plans that you have created within a sampling scheme, also enter the largest possible lot size. If you enter a value greater than the maximum allowed value (2,147,483,647), an error message will appear.
If, in sample determination, you use a lot size that is greater than the maximum interval specified in a table of sampling plans, the system cannot determine the sample size, and a 100% inspection is performed.
The sample size is the quantity of units (calculated in sample units) taken from a population or subpopulation in order to be inspected.
You use the acceptance code c in a sampling inspection for an attributive inspection to define the highest number of nonconforming units or defects in the sample that still allow the sample to be accepted.
You use the rejection code d in a sampling inspection for an attributive inspection to define the lowest number of nonconforming units or defects in the sample that lead to the rejection of the sample.