Solution : https://service.sap.com/sap/support/notes/662399 (SAP Service marketplace login required)
Key words :
page layout module solution install sp5 patch 2, terms page layout, page id reason, page layout, page unique, special character, special characters, prerequisites bug, sp6 hotfix 1
Related Notes :
| 663079 | Patch 3 of Support Package 5 for Enterprise Portal 5.0 |