We use the third-party SO to generate PR automatically, and set the SO not included in MRP calculation. (So the SO and auto generated PR both not included in MRP). But when we convert SO to DN, the DN was included in MRP, then after MRP run, system generate an PR automatically, this means the PR was duplicated. Then we change the settings of requirement class, to let the SO included in MRP, but still the PR was not included in MRP, after MRP run, system generate a duplicated PR as well.