Is there to a source to add 'Description' and 'Transaction Number' in Manage Description Rules AR

Summary:

I am creating custom description rules for AR Credit memo, Debit memo, Adjustments and Receipts.

I can't see an option to add 'Description' or 'Transaction Number' sources.

Content (required):

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

23C

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