ActiveControl 8.40 introduces a new User Exit Hook at the point of saving attachments within ActiveControl.
User Exit 0993 was added on the back of a customer requirement to be able to control and limit the size of attachments uploaded into ActiveControl (eg nothing more than 5MB could be added).
Using this user exit hook, customers can build their own solution to perform such attachment validation.
1. Develop the desired Function Module, as a local Z copy of sample /BTI/TE_EXIT_SAMPLE_0993
2. Activate the Z user exit in /BTI/TE_EXITC in the Domain Controller.