Description
This occurs when the TAXCODE being used is incorrectly configured. You must check each TAX CODE ( GST/N-T/EXP etc) is correctly configured.
Detail Steps
MYOB will allow sales to be completed by data entry - but will disallow WMS IMPORTING of SALES. Manual Importing will also create this error.
The linked accounts for Tax Collect and Tax Paid MUST have valid GL Accounts.