Difference between purchase organization, reference purchase organization and standard purchase organization

Difference between purchase organization, reference purchase organization and standard purchase organization

Normal Purchase organization is to procure either for the plant/entire company code/cross company level based upon assignment settings in SPRO.

For Reference Purchase organization, it will be simply assigned to other normal Purchase organizations only but neither assigned to any plant or company code. This is useful to enjoy the corporate contracts and their price benefits.

Regarding Standard Purchase organization, it is to handle procurement of special stocks