Is it possible to change overuse policy?
It is not possible to manage overuse policy in Plesk Automation (PA) 11.1. This feature was implemented in the Plesk Automation 11.5 version.
In PA 11.5 you can configure it in the following way:
Products > Service Templates > <service template name> > Parameteres > Edit
and change "Allow overuse of disk space and traffic" value.
To apply changes to the existing subscription it is necessary to sync them with the service template:
Products > Service Templates > <service template name> > Apply Template Limits and Parameters
Please check our documentation for additional information about PA 11.5 service templates configuration.