automate material rej on production order

Hello,

I'm trying to automate the process of rejecting lot controlled and serialized material items on a production order and am running into problems.
When using LN, the process is to start with ticst0101m000, then move Rejected Materials to Quarantine using tisfc0212m000. Here is the problem when zooming out on the Lot code field to generate the new lot code.
I'm having trouble automating the process of generating a lot # and have it retuned to the calling session.

Has anyone successfully automated this process using AFS or DALs?
Any help would be greatly appreciated.

Thanks,
Sandy