This is fairly straightforward to correct.
The error due to bad client data within Pay & Bill and is normally caused by bad import data or a system crash during creation of a new client record. Follow these steps to remove the erroneous record:
Log in to Access Pay & Bill and choose All Employers.
Click the Setup menu and hover over Clients.
Click Client Maintenance to open the relevant screen, and wait for the results to be displayed.
📌 Note: it is normal for this screen to take some time to load, particularly for systems containing a large number of employers and/or clients.
Check the top record displayed: Client ref in the top left corner of the screen should be blank.
With the relevant record selected, press Ctrl+M to enter modify mode, and then press F3 to delete the record.
Repeat the process for any other records that require deleting (e.g. bad import data resulting in Client References that are gibberish).
Once this process has been completed, you should no longer receive the error message when rerunning your timesheet import. If the message persists or you cannot see a client record with a blank reference, please contact us via the MyAccess portal and include the following details:
Article Title.
Version No (Bottom Right Corner of P&B).
Screenshot of the Client Maintenance screen from All Employers.