Auto populate Partners in escalation tab in QM01

Hello ,

I have a requirement to autopopulate the vendor in the escalation tab in QM01 based on the material /serial number entered in qm01....i tried to use the user exit ...QQMA0019 but this exit is not called at saving qm01 .ICSV0003 is not at all triggered in qm01....so ..can canyone please advise any user exits/badi/explicit enhancement that can be used. to implement this requirement.

Thanks,

YP