Hi Ashvin,
Yes, the language pack is installed. In fact, we are getting translated texts for ESS and SRM roles.
The issue is only with MSS role.
We'd already installed the latest patch (BPMSSADDON00P_1-10010389.SCA) from SAP Service Market Place. So, there is no point in re-applying the same patch again.
Anyways, I've already raised an OSS message regarding this.
Lets wait for SAP's suggestion now.
Regards,
Anurag