Event Enrollment Object can not be acknowledged

[awesome-coder]

Describe the bug
Event Enrollment Object can not be acknowledged

To Reproduce
Steps to reproduce the behavior:
Create a EE object
Use VTS to send an acknowledge request to this EE object
return a error code is no alarm config.

• Expected behavior*
  This object should be acknowledged

Minimal code example to reproduce

• If possible please provide a minimal code example, this will expedite the process of identifying and fixing the problem.