How to debug Job_Realtime_DQ_SAP_Address_Cleanse_Suggestions

Hi Experts,

I got an strange issue when I execute /FLDQ/ADR_VALIDATE by SE37 in CRM,

CRD and CRT give me two different cleansing results.

Therefore I want to debug the "Job_Realtime_DQ_SAP_Address_Cleanse_Suggestions" in data service for root cause.

But the job shows the error message "GAC_Suggestions>: <GAC0000>: [[GaAddressClass::GetOutputLineData() has failed"

I wonder what's the correct steps for debugging such job?

Thanks,

Robin