E-Recruitment: Exception CX_HRRCF triggered

Hi ,

I have written the SE38 to create external candidate (NA ID).once candidate id is created .

I want to check the candidate details in class CL_HRRCF_CANDIDATE.

in get method when i am passing candidate id its throwing exception : Exception CX_HRRCF triggered.

and when i go back and re-execute get method with same candidate id its working fine.

ISSUE: why it is throwing exception in ist time execution.

Thanks,

Honey