I do not think you can modify forms in DBA Classic to add the lot number field, but you may be able to with Evo-ERP's form writing capabilities.
 
However, I can offer a fix to reset all your item master records to lot tracibility at one shot and then each new item master entered will have to have lot control set to "Y" as you enter it (or you can perform this update periodically if you wish).
 
The method I offer is by using the System Manager's Utilities File Maintenance Global Replace feature (SM-UT-K-B).  There are pro's & con's using this feature.
 
The pro is this allows you to update ALL your item records at once.  However, the con is this will update item types that do not utilize lot control as well (i.e. non-inventory items).  You will get an error message asking to disable the "Y" value for these items if you were to do item master maintence on them.
 
If you still want to continue, First, back up the company data for which you will be doing maintenance to. Using the "Global Replace" feature, display and select the "MTICMSTR.??" file for the company whose records you want to update. Then select field MTIC_PROD_LOT.  Enter value to replace"N" and replace with "Y".  This will update ALL your item master records as requiring Lot control and you will then be prompted for lot number as you receive items into inventory.  However, I am not sure how those item types not supporting Lot control will behave on receiving as purchases, work orders, or shipped against sales orders.
 
Hope this helps, but be careful.

Lynn,  
 
What if we were to issue materials using WO-G before the work order status was changed from F to R. If we did this the lot number should already be assigned to the work order and I think, and should be able to print on the work order forms. The one thing I'm not sure about is what to do about items going negative on the inventory side. Shouldn't I be able to get aroud this by using the List Components method in WO-G and having POs in place. What do you think about this and will it even work this way? If what I've said is going to work I would like to talk with you about the programming changes. Thanks for all the help Lynn.  
 
 
Dennis,  
 
Thanks for the help.

Lynn,  
 
That makes a good point. As far as DBA knowing what lot number(s) to print on the work order form, all we need to do here is print the lot number(s) on them so the person doing the picking know which lots to pull from and so we can have first in first out and also have trace ability on our products. Is there a way this could be done in DBA currently or is this something that would require programming. If this is something that would require programming, what needs to be done to get it started. Thanks.