Setting a job is very easy because it allows you to select the entity (type with a Duplicate Detection Rules are set) and mention which View is selected to run against. Most importantly scheduling is possible. Once you schedule it, you will get a new report after each execution.
This is where frustration starts. For example, I am trying to monitor how fast duplicate Contacts are being grown by checking a report every week. Below is a sample report. D365 instance I am monitoring already got thousands of duplicates.
First I was surprised to see number 12. Then I realized, 12 is nothing, but the number of records showing in this page. (at least it could have been 10!, what is 12 anyway..) Then I had to click next and go on. The simple mistake in this window is, it doesn’t show the total number. For me, it was a hectic task click next again and again to check the number of records.
Anyway, I ended up writing a console application to read the number of records in the report. Below is the Fetch Xml I used for it. May be this will help you too.
<fetch version="1.0" output-format="xml-platform" mapping="logical" distinct="false" > <entity name="duplicaterecord" > <attribute name="duplicateid" /> <attribute name="createdon" /> <order attribute="createdon" descending="true" /> <filter type="and" > <condition attribute="createdon" operator="on-or-after" value="2020-07-03" /> <condition attribute="createdon" operator="on-or-before" value="2020-07-06" /> </filter> <link-entity name="asyncoperation" from="asyncoperationid" to="asyncoperationid" > <attribute name="name" /> <attribute name="createdon" /> <filter type="and" > <condition attribute="name" operator="like" value="%Weekly Duplicate Monitor Job: Active Contacts%" /> </filter> </link-entity> </entity> </fetch>