This is an error normally caused by a slight corruption in the data.

To resolve this issue, you will need to rebuild the following 3 files:

acchisth.dat, acchistl.dat and accoi.dat

To rebuild the files, you will need to do the following:

• Click on Start...Programs - Softline pastel - pastel partner - Rebuild Utility
• When prompted for making a backup, click on OK (Ensure this is done in case something goes wrong)
• Double-click on the company folder so you can see the data file of this company
• Select the files you want to rebuild acchish.dat, acchistl.dat and accoi.dat...click on the Rebuild button
• When each file is finished it will say that there were a number of files, make sure that the same number has been rebuild and click on OK
• When you are finished close the rebuild utility
• Open pastel and try updating the invoices again