Hello Hasanein,
I would suggest that you directly coordinate with your finance colleagues what they are interested in, what they want to reconcile, etc. as you and your finance colleagues know the setup of your system (main accounts, financial dimensions used, etc.) best. Probably make some test runs together with them before go live to see if everything works fine and to ensure that your finance colleagues are happy with the things you plan to record in AX.
All the best,
Ludwig