Guido Janssen,
Thanks for using the Broadcom Community!
Yes, you are correct! Detections with "ACM" at the start of the detection name are associated with our Adaptive Protection technology.
For ALL options involving Adaptive Protection "tuning" see this link:
https://techdocs.broadcom.com/us/en/symantec-security-software/endpoint-security-and-management/endpoint-security/sescloud/Using-Adaptive-Protection/Behavioral-Isolation-Heat-Map.html
In the case, the application is trusted and you need to add an Adaptive Protection exclusion refer to this link for the steps:
https://techdocs.broadcom.com/us/en/symantec-security-software/endpoint-security-and-management/endpoint-security/sescloud/Using-Adaptive-Protection/creating-custom-exceptions-for-adaptive-protection.html
If you require further assistance beyond the above, kindly open a case with Broadcom Support and we'll take a look into this behavior and provide our suggestions.
Thanks,
Russ_V