While a language fix isn't available, the following steps can be followed to resolve the issue and show the pop up in Spanish accordingly:
1.- Stop Service Catalog services.
2.- Download the ZIP file attached to this article.
3.- Unzip the file and place the 3 files on the following folder: ..CA\Service Catalog\filestore\custom\locale\iceses\request
4.- Delete the content of: ..CA\Service Catalog\view\translets
5.- Start Service Catalog services.
6.- Clear browser cache and perform a test.
The pop up will now look like this:
<Please see attached file for image>UPDATE
: Engineering team development a definitive solution for this issue, please open a support case and request the fix.