I have send the invoice to customer, afterwards goods are return from him, now i rejdone work on goods and want sending him again with the same invoice number.

Hi loveredlabelltd

If you have enabled custom transaction numbers you can enter a new invoice with the same invoice number. To check this is enabled, go to the Cog > Account & settings > Sales > Sales form content > Custom transaction number > tick and save. If the original invoice is still on the system, you can close this using a credit note (+ New > Credit Note), entering the same product/service as was used on the original invoice and same amount & VAT. 

To apply the credit note to the original invoice, open the invoice and select 'receive payment' and tick the credit note appearing under 'credits' to apply. 

Please get back to us below if you have any questions.🙂