When posting Line Items from Event Temple to Mews, you may encounter errors such as:
“Error creating Order in Mews. A selected Line Item has a tax that differs.”
“The selected Line Item has an invalid Tax.”
These messages refer to the same underlying issue: the tax applied to the Menu Item in Event Temple no longer matches the current tax configuration in your integration or in Mews.
Why This Happens
This error typically occurs when:
A tax used on a Line Item was edited or deleted after it was applied to a Booking
Tax mappings between Event Temple and Mews are no longer aligned
A Line Item still references an outdated or “Not a Current Tax Code”
The tax environment in Mews has changed but Event Temple has not been refreshed
When this happens, Line Items may appear highlighted in red and show a note such as: “Not a Current Tax Code”
How to Fix the Error
Option 1: Re-add the Tax to the Line Item (Most Common Fix)
If the tax still exists and is valid:
Open the affected Line Item in the Booking
Remove the existing tax
Re-add the correct current tax
Save the Line Item
Try posting again to Mews
Option 2: Refresh Event Temple and Repost
If taxes are correctly mapped but the error persists:
Refresh Event Temple (log out/in or reload the booking)
Confirm tax mappings in Settings → Integrations → PMS
Repost the Menu Items to Mews
Option 3: If Tax Changes Were Made in Mews
If Mews tax codes were recently updated:
Go to Settings → Integrations → PMS
Click Refresh Linked Enterprise
Confirm the updated tax environment in Mews
Re-map taxes in Event Temple if required
Save changes and test posting again
⚠️ Important: Refreshing the Linked Enterprise may remove existing tax mappings, requiring them to be reconfigured.
When to Contact Support
If the issue continues after trying the steps above, contact support with:
Screenshots of the error
Steps already attempted
Relevant Booking or Invoice details
Tax setup configuration (if available)