Having a dash "-" or a forward slash "/" in the template alias produces the error: "Template Id/s do not exist." Dashes and slashes are not supported in the Template Alias.
Cause
Having a dash "-" or a forward slash "/" or an underscore "_" in the template alias produces the error.
What to Do
Dashes and slashes are not supported in the Template Alias. If you need to use those characters you'll need to use the &OFN parameter instead.
This produces an error: &TemplateId=[Pipeline+Report+_+2015-01-27]a0Cj0000001I1Xj
This Works: &TemplateId=a0Cj0000001I1Xj&OFN=Pipeline+Report+_+2015-01-27
It is important to note that all special characters can be problematic with using the &TemplateId parameter.