>Hi everybody,
>
>What would be a better way to word the message:
>
>This guest can not be deleted because there is associated sales activity
>
>This guest can not be deleted because there are associated sales activities
>
>or
>
>is where a third better way?
>
>Thanks in advance.

I agree with the advice to restructure the sentence, but if you stick with this, use "is."

Tamar