[opensuse-buildservice] SLE11-SP(1|2) SDK repositories missing?

Hi everyone, I am trying to build some packages from SLES11SP(1|2) with build dependencies on packages included in the SLES11SP(1|2) SDK. Thus, I wanted to add the SDK as a repository, but could not find it for SLE-11 and above. Only SLE-10 shows up...? Any help will be greatly appreciated! Thanks!