record of tables datatype used in API

Hi,

I'm working on using an API described in Note.976328.1 - Data Hooks For Manipulating Data in Value Chain Planning.

I need to use the MSCATPCB.pls and Add code  to modify information generated by the ATP engine.

For this I need to say

IF p_atp_rec.ship_date  < p_atp_rec.requested_ship_date THEN  x_atp_rec.Ship_Date:= apps.rsc_next_work_day(sysdate); END IF; x_return_status := fnd_api.g_ret_sts_success; x_modify_flag := 1;

End;

Here apps.rsc_next_work_day returns the next working day date.

I cannot seem to complie this code.I get the error