I recently created my own BDC upload template that enables user to choose the processing mode, the update mode and options for Default Size, Continue After Commit, and Not a Batch Input Session easily.
Another good thing with this program is a functionality to generate an excel file template. The image below shows the actual screenshot.
I modified the SAP standard program BDCRECX1 and saved it as ZBDCRECX1. I used this for my BDC upload program instead of the standard BDCRECX1 include. You may download the source code of ZBDCRECX1 on the link below. I also included a sample upload program utilizing the ZBDCRECX1 include.
Enjoy coding! 
sdn blogger
sap blogger
Good post. Very interesting BDC example. I also maintained a blog about SAP - http://www.sapgeek.net. Can we change the link between our blogs? Please kindly let me knowThanks,
Andy