We are upgrading our portals from Fixed to Composite. While reading into PDN I found that for a Composite portal we need to specify the SPACE details in SPACE tab of Portal rule(Defining the Work Space is must). However, when I converted a Fixed Portal to Composite there was no option to specify the space details. Any help would be appreciable.
Since you have upgraded to Pega7.1.7 from older version of your PRPC you are still seeing the older rule form. In order to support the backward compatibility, the Portal rule has still the space option specified.
However when you create a new portal rule, you will not see the space option in the rule form.
Please let me know whether this answers your question.