=====Difference Reports=====
{{entry>0;Difference Report;-}} 
Difference reports, use saved versions of a report format to calculate the difference in records between two versions of the same report printed at two separate times. Each line item represents a record that has a change in quantity from one version of the report to the other. 

In order to be able to run a difference report, previously cataloged reports must have YES chosen on their screen 5 diff report filter. Choose a report and press **Modify**.
[{{:cats:procedures:reports:differencereport_modifyreport.png?|Modify from select report screen}}]
Go to **Screen 5** on the top menu bar. Make sure the option for **Diff Report** is set to YES.
[{{:cats:procedures:reports:differencereport_modifyreportscreen5.png?|Modify report screen 5}}]
Once you have saved a report file with a Diff Report Yes filter, CATS will begin keeping track of versions.

Go to **Position Reports > Difference**.
[{{:cats:procedures:reports:differencereport_accessmenu.png?|Go to Position report then Difference}}]
Select the category of report for which to run comparison and **Continue**.
[{{:cats:procedures:reports:differencereport_createreport.png?|Select a report type to proceed}}]

Select the name of the report to use in the comparison from the list. Only reports which have run more than once can be compared. Then press **Next**.
[{{:cats:procedures:reports:differencereport_selectreport.png?|Select a report for comparison}}]

Select two dates to compare. You will need to select from a list of saved versions of the report. Select using the [Ctrl] key and clicking on two different lines in the list. The older report will be treated as baseline for the newer report. Then choose **Print**.
[{{:cats:procedures:reports:differencereport_selectdaterange.png?|Select date range to compare}}]

You will be asked to create or choose a format for the difference report. Note that this does not override the report format of the (for example) Net Physical report you are using to print the difference report; this Difference Report format allows you to choose how to display the data on the difference report itself. Select a report and continue to **Print** as usual. 
[{{:cats:procedures:reports:differencereport_selectreportformat.png?|Select report format}}]

You will see a list of the items that have differing quantities from one report to another. 
[{{:cats:procedures:reports:differencereport_report3.png?|Sample difference report}}]

Instead of navigating to the Difference Reports area, wherever you see the Diff Report button on a saved report file, you can choose that button instead.  
[{{:cats:procedures:reports:differencereport_diffreportfromselectreportscreen.png?|Diff report button on a saved report}}]

====Snapshot Diff Report====
A snapshot report is everything that is on the original report. It is the format of a difference report but will show original dates. 
Go to **Position Reports > Difference**.
[{{:cats:procedures:reports:differencereport_accessmenu.png?|Go to Position report then Difference}}]
Select report type and **Continue**.
[{{:cats:procedures:reports:differencereport_createreport.png?|Select a report type to proceed}}]
Select a the report for comparison. Then press **Next**.
[{{:cats:procedures:reports:differencereport_selectreport.png?|Select a report for comparison}}]

For a snapshot report, only choose one date, then press **Print**.
[{{:cats:procedures:reports:differencereport_chooseonedateforsnapshot.png?|Pick only one date for a snapshot report}}]
You will receive a message asking to confirm that you are selecting one record.Press **Yes** to continue and then print as usual.
[{{:cats:procedures:reports:differencereport_snapshot.png?|Confirm snapshot}}]
Sample snapshot report.
[{{:cats:procedures:reports:differencereport_snapshotreport.png?|Snapshot report}}]

{{tag>"Difference Report"}}