Hi,
There are few things which i need to address:
- If you change any thing in standard variable then this will impact globally wherever it is being used.So in you case if you need to make the variable entry mandatory then this change will effect everywhere.Better to create a Zvariable with the same parameters and give the desired description and use the same in the query as well.
2. You can confirm with the user whether the description of variable need to be changed or the calmonth infoobject description.
Hope that helps.
Regards,
AL