We currently import a flatfile into the DBA EDI module that contains the basic info from the raw EDI transmission after running it through EDI mapping software (We do not use CanDoEDI because we are not allowed to use a VAN). Our customer now demands that info in the SAC segment of the PO (promotional discounts) be shown in the coresponding invoice for that PO.  
Can anybody tell me which fields in the flatfile need to be populated?  
Any other hints are welcome
 
To Lynn:
Are there any plans to come up with a more advanced EDI module that can handle a wider range of input?