Share all details about your problem, including any error messages you may have received.
Specifically, the Comments and Start/End Date specified in requests are not included in the emails sent to primary or secondary approvers. Can they be?
Comments (not Start/End dates) ARE showing up in the email sent to the requestor upon completion, but not in the others. Do you know if this just wasn’t configured or does it require custom coding?”
If it is not available in OOTB Email Template, then you need to create your custom email template, beanshell coding is required to send the required variables to the email template and email template will get those values at run time.
You can use Apache Velocity Engine Template for your custom email template.
Prior to calling the email template trigger, are you obtaining all the necessary values? If so, please incorporate them into the template. Conversely, if not, it is advisable to utilize Velocity scripts.