VAT registration is backdated - how to edit all invoices

Question

I registered for VAT a few months later than I should have. I now need to change all sales and purchase invoices to include VAT. I have a problem with editing sales invoices - I don't know if I'm doing something wrong. Since the invoices have already been paid and allocated with payments, I unallocated them first. However, Sage won't let me change them. Is it possible to do a journal to credit sales and debit VAT (for sales invoices) 
 Thank you

Aziz El Aswad · Answer

Hi Wojciech 
 Thanks for using Sage Community Hub. 
 You could post a VAT only invoice for the additional VAT required. The guide below gives you the steps to do so: 
 How to create a VAT only invoice or credit 
 If this answers your query please select Verify Answer. 
 Regards Aziz Sage UKI

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VAT registration is backdated - how to edit all invoices

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