Hello Iulia
1) for my perspective TMF679 is mainly designed for commercial eligibility because it works at product level. I will more recommend service qualification API for technical eligibility. From an implementation perspective this could trigger some challenge because need to mix 2 calls but usually these API supplier components are not the same (Commercial catalog vs feasability check component).
Adding max/min could be an interesting idea to improve the API - it is true that sometimes a given customer could not buy more than X occurences of same offer. A Change request should be trigger for this.
2) For me the price are not supposed to be retrieved by POQ. For consistence we use same ProductRefOrValue class for all product API so that why you have this productPrice.
Hope it helps
Ludovic
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Ludovic Robert
Orange
My answer are my own & don't represent necessarily my company or the TMF
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