Read only Data page throwing error when Response DT is mapped
We are using Pega 8.3.2 version and when using the Response Data Transform rule to map data to different class in the Read only data page,it is throwing below exception -
[MSG][22.214.171.124: Error processing input][STACK][com.pega.pegarules.pub.clipboard.ReadOnlyException: The page or property D_XXXX_pa233688500930568pz.pxResults(1) is read-only, and cannot be modified.
Can someone help to understand do we really need to make data page editable to map data using response data transform or is there is other solution?
I referred below solution to understand but it does not work with me.