Functionality
You can use this sample function module as template for creating modulesfor the change document tool's event Format Object Value.You can store these modules in the change document objectCustomizing settings in view Object Events for formattingthe object value. The I_OBJECTID parameter contains the objectvalue in key form, which is converted to plaintext and supplied to thechange document tool in the E_OBJECTIDTEXTTEXT parameter.

Notes
The object value is provided in unformatted form in the sample functionmodule.
Parameter I_OBJECTCLAS is of an informal nature and identifiesthe change document object.
Parameter I_OBJECTKEYSTRUC provides the name of the structurefrom the Customizing settings of the change document object thatdescribes the object value.
If you want to use the standard formatting of the change document toolyou do not need to create any such modules, and so also do not need tostore them in the Customizing settings.