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It is possible to block Item Variants for sales, purchase and service documents.
It would also make sense to add assembly and production orders, so specific item variants can be blocked for consumption.
This functionality would also make sense for Items (only manufacturing) and Resources (only Assembly).
It would also be great, if i would only see the non blocked elements, when I want to select a data record.
STATUS DETAILS
Declined

Business Central Team (administrator)
Thank you for reaching out. Your suggestion seems to be a duplicate of the following suggestion: Block Item For Production (Similar to Sales and Purchase)