How To Fix O1660 - Calculation procedure & and tax key & not in table T007A.

O1660 - Overview

• Message type: E = Error

• Message class: O1 - IS-Oil : Message pool exchanges

• Message number: 660

• Message text: Calculation procedure & and tax key & not in table T007A.

What causes this issue?

The tax code &V2& entered is not valid for the calculation procedure
assigned to the exchange partner's country.

System Response

Error message. Further processing prevented.

How to fix this error?

Select a valid tax code or maintain Table T007A.

Error message extract from SAP system. Copyright SAP SE.

O1660 - Details

• The SAP error message O1660 indicates that there is an issue with the calculation procedure and tax key not being found in the table T007A. This table is used in SAP to define tax calculation procedures and their associated tax keys, which are essential for tax determination in various transactions.
  
  Cause:
  
  Missing Entry in T007A: The most common cause of this error is that the specific combination of calculation procedure and tax key is not defined in the T007A table.
  Incorrect Configuration: There may be a configuration issue where the tax key or calculation procedure is not set up correctly in the system.
  Data Migration Issues: If data has been migrated from another system, it is possible that the necessary entries were not transferred correctly.
  Custom Tax Keys: If custom tax keys are being used, they may not have been properly configured in the system.
  
  
  Solution:
  
  
  Check T007A Table: 
  
  Go to transaction SE16 or SE16N and enter