Can't find client files in RETS feed

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Hi, Our client claims that he has pdf files attached to his listing and those are present in MLS, but we can't find a way to get it from RETS server, maybe you can help us with this.

ListingId: 4917576

We are using Classic RETS

https://neren-rets.paragonrels.com/re...

Account Name: newidx or UnionStreetMediaIDX

Tired to search for those in different resources that we have access to, but with no success.