What this error means
You may see an error like:
Date cannot be before the end of year lock date
Lock date error
Period Lock Date Error
Account Period Closed
This means your accounting software has a locked accounting period, so Link My Books cannot post settlements dated before that lock date.
Why this happens
This usually happens when your accountant has finalised the accounts for that period and locked it to prevent further changes.
This is common after:
month-end close
year-end close
financial statements being finalised
Because of this restriction, the accounting platform blocks any new transactions in that period.
How to resolve it
To send the settlements successfully:
Speak with your accountant to temporarily unlock the accounting period.
Send the settlements again from Link My Books.
If necessary, your accountant can adjust the dates on the entries once they have posted.
This is a normal step after financial periods are closed, so your accountant should be able to unlock and relock the period quickly.
When to contact Link My Books support
Contact Link My Books support if:
the accounting period is not locked but the error still appears
the settlements continue to fail after unlocking the period
you want us to review the failed settlement
Please include:
the settlement ID
the exact error message you received
a brief description of the steps or events that led to the error
a screenshot if possible
This helps our team quickly identify what happened and investigate the issue more efficiently.