Tuedec - 2007-08-07

I completed and posted an invoice (customer).  Then I voided the invoice.  I noticed that Compiere creates a new invoice with a negative amount equal to the amount of the invoice I just voided.  The Document Status for this new invoice is Reversed.  And it shows as "Not Posted".  I tried to post it but it is giving me this error:

"Cannot Lock - ReSubmit or RePost with Force"

What is the meaning of this?

Do I need to post this? I thought that Compiere automatically negates the account when an invoice is VOIDED.  When I voided the invoice and run the Income Statement report, the revenue still reflects the amount that has just been voided.

Please help, I am getting insane about this whole Compiere thing.

Thanks a lot.