Unable to Delete Activities in E-Rec

Hi All,

Am unable to delete any of the activities. I get the following error message : "Error occurred when executing
the process". SLG1 logs are as follows :

On debugging this further, I found that the below code from method "DELETE_ACTIVITY" of class CL_HRRCF_ACTIVITY_BL is raising an exception.

I am on EHP6 and using E-REC in an integrated environment. The above code is not present in my other EHP4 system.

Thanks,
Sachin