44f748cd_ubleshooting___Error_Messsages_on_errors_you_might_encounter__Solution
[Error Message] LINK MISSING [Details] Course has a required lab or recitation that needs to be added at the same time. [Solution] 
Select all parts of a course, to include the lecture and a lab or lecture and a recitation. In some departments this means adding 2 different CRNs, which must be added at the same time for the system to accept it.
Lehigh University: Registrar: Registration: Web Access Troubleshooting & Error Messsages
Solution