This video highlights the various ways you can get diagnostic information about errors and warnings in APT as you develop a proposal for submission.
Related videos:
Adding Special Requirements in APT
Aladin Overview in APT
APT Graphical Timeline
APT GUI Overview
APT Visit Planner
Specifying Mosaics in APT
Using Aladin with APT Visit Planner
JDox articles:
APT Overview in JDox : https://jwst-docs.stsci.edu/jwst-astr...
APT Help Features: https://jwst-docs.stsci.edu/astronome...