How To Fix M8176 - You cannot enter a tax amount when 'Calculate tax' is selected

M8176 - Overview

• Message type: E = Error

• Message class: M8 - Invoice Verification/Valuation

• Message number: 176

• Message text: You cannot enter a tax amount when 'Calculate tax' is selected

What causes this issue?

You have entered a <LS>Tax amount</> in addition to selecting
<LS>Calculate tax</>. This is contradictory.

System Response

The system issues an error message and will not allow you to continue with this transaction until the error is resolved.

How to fix this error?

Please check if the tax amount is actually indicated in the invoice.
If it is, deselect <LS>Calculate tax</>.
If not, delete the entry in the <LS>Tax amount</> field.

Error message extract from SAP system. Copyright SAP SE.

M8176 - Details

• The SAP error message M8176, "You cannot enter a tax amount when 'Calculate tax' is selected," typically occurs in the context of materials management or financial transactions where tax calculations are involved. This error indicates that the system is set to automatically calculate the tax based on the transaction details, and manual entry of a tax amount is not allowed.
  
  Cause:
  
  Automatic Tax Calculation Setting: The transaction is configured to automatically calculate tax based on the relevant tax codes and rates. When this setting is enabled, the system expects to compute the tax amount itself.
  Manual Entry Conflict: If a user attempts to manually enter a tax amount while the system is set to calculate it automatically, this conflict triggers the error message.
  
  
  Solution:
  To resolve this error, you can take one of the following actions:
  
  
  Remove Manual Tax Amount: If you are entering a tax amount manually, you should remove that entry. Allow the system