We are using an Enterprise Portal on release 7.31 SP5 to display various WDA applications from ABAP backend systems, that are mostly our own developments. For a consistent "Look and Feel" we have built a customer theme in the portal.
Now we are in the process of upgrading one of the ABAP backend systems to release 7.40 and that includes a newer stylesheet which now overrides the portal stylesheet because of the higher version number. According to report WDG_MAINTAIN_UR_MIMES the stylesheet version in the new ABAP system is 10.30.3.240577.0, in the portal system it is10.30.3.239350.1. This behaviour is correct and understandable, because the newer release might contain new design elements, which the older portal stylesheet cannot handle. We are aware of these limitations, but want to enforce the portal stylesheet anyway. One possibility is using the WDA application WD_GLOBAL_SETTING to activate the parameter WDFORCEEXTERNALSTYLESHEET and this seems to work fine for now. But of course sooner or later we might get rendering errors out of it. So option two would be to upgrade the stylesheet version of the portal system in order to establish that stylesheet as the leading version without having to enforce it and still be able to use new design elements.
According to SAPNOTE 2080445 the portal stylesheet has to be installed with the latest EPBASIS patch. For our 7.31 SP5 portal that would be patch #21, which we have already installed. Can it be true that the only other option to upgrade the stylesheet would be a portal upgrade? Does anybody know a way to just upgrade the stylesheet version?