You have to include both bachelors and masters in education section. Below is the text mentioned in the Saskatchewan site.Hi,
I’m filing as SINP application, I have one doubt which I would like to clarify. I have Both Bachelors as well masters degree however I have ECA done only for my masters degree as it is my highest level of education. My question is do I need to put both bachelors and masters in Education section or just masters as I have ECA report only for masters? Any suggestions?
For all education obtained outside Canada, such as an academic or technical degree, diploma or certificate, you must submit an educational credential assessment (ECA) from a designated organization, as per IRCC's list of approved organizations.
https://www.saskatchewan.ca/residents/moving-to-saskatchewan/immigrating-to-saskatchewan/saskatchewan-immigrant-nominee-program/applicants-international-skilled-workers/international-skilled-worker-saskatchewan-express-entry