AP invoice validation date

Dears,

I want to know if it is possible to extract the validation date of payables invoice from any database table or query.

I did some research, but all what i found is the last updated date of the invoice which will not help us because some transactions will have another last updated date once transferred to GL.

My question is: Is there any place where the validation date is saved?

Appreciate your reply.

Thanks,

Ahmad