How to change starting number quote or invoice number

Hi Janetran 

Thank you for posting and welcome to the MYOB Community Forum.

If a sale transaction has a white zoom arrow next to it, it means it can't be changed. To make it changeable (so it has a blue zoom arrow), you have to go to Setup >> Preferences >> Security >> Tick on the box for Transactions CAN'T be Changed; They Must be reversed. You could then change the Invoice or Quote No. manually if you click the box next to Invoice/Quote No... You can type a different number into the field. 

Note: the sequence will be broken when you change the invoice number to a different number. Invoices and Quotes have the same sequence of reference numbers.  

Please feel free to post again. I'm happy to assist further.

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