Hi,

Also,please have a look into the below policy.

It is Pegasystems’ policy not to backwards-test new versions of Platform Components with older releases of PRPC. Support for new platform products is provided through newer versions of PRPC software.  If you choose to upgrade Platform Components to the latest releases, but want to stay on older releases of PRPC, you may enter support requests for any problems encountered. However, if the root cause of these problems stems from the fact that the older versions of PRPC were not designed to handle functionality in the newer Components, Pegasystems may request that you upgrade your PRPC version to a release that directly supports that newer Component, as listed in this Guide.