Import Customs Declaration population of Mode of Transport at Border

Hi All,

I am stuck on an issue.  We need to populate the Mode of Transport (field MTBRC) under the Means of Transport at the Border when the Import Customs Declaration is created.

Under the Master Data > Default Data > Define Rules for Default Document Data we had this always defaulting a "1".  We now need this to be based on the Inbound Delivery.

I removed the 1 from the rules that was defaulting but by doing this the field is coming in blank.  Under the rules the section looks like:

Mode of Transport at Border                             H_MTRBC

-Organizational Unit ./ Country of Destination    FC_0031

-Country of Destination                                       FC_0002

-Geographical Group                                         FC_0040

-Default                                                              STANDARD

My question is do I need custom programing in my production R/3 system is populate this?  We already have a few BAdI's active but I don't see where this is called out.

Thanks in advance for the help.

Eric