BDC...??

hi..

i hav created al lmy steps of Lsmw..and reached the stage of bdc..now i need t oupdate the records..after reaching sm35, do i need to follow any further steps..?

After hitting the execute(Proceess) in my sm35,i get cust change intial screen and keeps sayin "enter a valid value or line after each entry....

regards,

vishal