Vilas,
I actually think the information I posted does answer the question. As it is tailored company specific information. In our company the standard acceleration altitude is 1000' yet the guidance from our 3 documents remains the same (FCOM, OM-B and Airbus Training Guide) to follow the SRS.
From this I deduce that in the event of wind shear being detected.. The aircraft would remain in SRS.
As for the OP, why is your company using an acceleration altitude of 400'?
(400 being the minimum regulatory acceleration altitude - but far from necessary or desirable in the A-320)