I have products A & B that can be ordered separately, but "A" *must* be ordered before B can be ordered. I would like product B to contain a field for customer to input their ORDER ID # from their previously-purchased product "A" and have ZC search the DB for a valid ORDER ID #. If ZC cannot find the ORDER ID #, then customer is not allowed to order product "B". Is this possible? If so, I would appreciate some direction as to any threads already existing. I have not had any luck finding such.
Please let me know if I need to clarify anything in this post.
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