Custom Code for Auto incrementing

Hello,

I am trying to build a module in Sugar Sell. I have been trying to import records with ID's 601-1188. Once imported I need the records to auto increment as there entered. Sugar Support has told me that I would need to use a custom code level modification. I am new to Sugar and was hoping someone could help. 

Regards,

Laura Pezone

lpezone@bijurdelimon. com