Hello there,
As an A-side user, you will not be able to view Z side cross-connect details due to privacy and security reasons.
The V1/assets/search URI only allows the authenticated user to view the assets within their organization. (i.e. An A side user who is making the API call is only allowed to view A side asset info). As Z side falls under a different organization, the authenticated user will not be able to view the Z side asset.
Could you please elaborate why you'd like to know the assets details of a Z side customer, also could you please share how you got the Z side cross-connect asset ID?
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