Interior wall removal (Bimsplatte V 25) in old building - tips?

Dear forum,
we have fulfilled our dream of owning a home and are now facing many challenges that are surely familiar to some. I am currently dealing with the following "minor issue": an interior wall. According to the construction description (BJ 66), non-load-bearing walls are all those that are concealed under the term "Bimsplatte V 25." Since they are non-load-bearing, they can be removed. So far, so good. However, I cannot find any description of how exactly to identify these. Apparently, these existed in hollow form as well as HBL 25 stones. It would be simple if the plates could be recognized as plates (without hollow space). Then the question would be resolved (I have not yet been able to view the wall in its bare state). If this is not the case, I would be grateful for a tip. I am asking the question now because I will not have reception later. Perhaps a response will come by then, so I can already look at the wall differently.

Thank you very much.

The 25 stands for the bulk density, the V for a solid brick. In wall thicknesses of 11.5 cm or less, hollow blocks also make little sense. Without being able to quickly check details, I would say: the panels for non-load-bearing interior walls are likely to resemble gypsum boards in format, that is: large formats up to 1m in length.

If you upload floor plans (and preferably also sections), more precise information can probably be given.