GATP - Rule Maintenance

Dear Experts,

I have encountered an issue with regard to Product Substitution. There is a SP material = Sales Product which is substituted by the MA material = Finished product.

In the Rule Maintenance: The MA material is both maintained in Exclusive and Inclusive Rule of a particular SP material.

I believe this is the cause why the SP is still substituted by the excluded MA because it is also included in the inclusive rule of that SP.

Please confirm initial findings.

Thank you very much.

Glason