ContributionsMost RecentMost LikesSolutionsRe: Unable to re-send sales invoice in a locked period Shella_Awrote: Hi RonAva, Thank you for your post and welcome to the MYOB Community Forum. I hope you find plenty of useful information. The error message indicates that the invoice you’re trying to resend is within the lock period date. This will prevent anyone from inadvertently making an entry or changes in a period in which you don’t want new entries. To resolved this, you may follow the following steps below: Go to theSetupmenu and choosePreferences. Click theSecuritytab. Untick thebox Lock Periods: Disallow Entries Prior tooption and choose the relevant date. This selection will unlock on all transactions prior to the date selected. Click OK. Please note that youruser roleneeds to have the permission to change preferences. Do let us know if you need further help. Otherwise, if my response has answered your enquiry, please click "Accept as Solution" to assist other users find this information. Cheers, Shella No this has not helped Re: Unable to re-send sales invoice in a locked period How do I unlock a period in MYOB Lite!? I cannot find any set up or preferences in the menu options