Invoice approval data model customization

Summary:

Hi all,

We have a requirement to add coding workflow comments entered by coders in the invoice approval notification.

Is it possible to customize the underlying data model of approval notification to add additional queries and bring the data into the template?

Content (please ensure you mask any confidential information):

Version (include the version you are using, if applicable):

Code Snippet (add any code snippets that support your topic, if applicable):