There are a number of reasons why error 1012 may occur:
User may have incorrectly logged out of the system
Workstation disconnected from the server
Remote session may have been interrupted
Heavy network traffic
The data integrity check indicates the file has reached the maximum records per data file of 4,194,303.
To resolve error 1012, you will need to do the following:
Ensure all users are logged out of Attaché.
Restart the Attaché Services. See: Restart or check the Attaché services.
Run the Index File Optimiser utility. If File Optimiser finishes with no errors:
If Accounts, keep going with any current transactions and make sure they are entered correctly. You can delete them and re-enter if required
If running Payroll Check Pays, uncheck the pays, fix any issues that occurred in the Check Pays process, and re-run Check Pays
If you receive an error when running the Index File Optimiser, you will need to restore the company from an archive. See: Restore an archive backup file.