IT 0031 ( Reference Personnel Number)

Hi Gurus,

I am trying to run the Cross Country Action through PA40 and this action is not creating a new record in IT 0031 (Reference Personnel Numbers) automatically even though I have assigned the old personnel number in IT 0000 ( Reference Personnel Number Field).

Kindly help me by stating how to generate IT 0031 automatically. Suitable points will be awarded.

Regards,

Garima