Each credit program (Find | Credit Programs) has a setting to calculate the GPA or not. You need to tell ASAP to calculate the GPA (for High School Diploma transcripts) while maybe not calculating the GPA for the CTE transcript credit programs. To activate this option go to Configure/Preferences/Custom Use/check Perkins_COE to yes.
If Calculate GPA = False, no GPA is calculated. If Calculate GPA = True, ASAP will calculate the GPA for the transcript.
NOTE: ASAP does not keep a running GPA for the student. The GPA is only calculated when running the transcript.
For information about how the GPA is calculated from the individual records in the Credit Program, see this article.