How To Fix AJ635 - Tax determination group &1 is inconsistent

AJ635 - Overview

• Message type: E = Error

• Message class: AJ - Billing program

• Message number: 635

• Message text: Tax determination group &1 is inconsistent

What causes this issue?

A <DS:DE.TAXGROUP>tax determination group</> must be used as follows in
the <DS:DE.STEPINACT>active</> steps of the billing schema:
There must be just one schema step with a variant from category 17
(variant is written with a tax determination quantity).
There must be at least one additional schema step with another variant
category.
This is not the case with tax determination group &V1&:
Number of steps with a variant from category 17: &V2&
Number of steps with other variants: &V3&

System Response

The billing schema is inconsistent and cannot be saved.

How to fix this error?

Correct the usage of tax group &V1&.

Procedure for System Administrators

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

Error message extract from SAP system. Copyright SAP SE.

Smart SAP Assistant

• What is the cause and solution for SAP error message AJ635 - Tax determination group &1 is inconsistent ?

  The SAP error message AJ635, which states "Tax determination group &1 is inconsistent," typically arises in the context of tax determination in the SAP system. This error indicates that there is an inconsistency in the tax determination group configuration, which is crucial for calculating taxes correctly in transactions.
  
  Cause:
  
  Missing Configuration: The tax determination group may not be properly configured in the system. This could mean that the group is not assigned to the relevant master data (like customers or vendors) or that the necessary tax codes are not linked to the group.
  Inconsistent Data: There may be inconsistencies in the data related to the tax determination group, such as missing entries in the tax configuration tables.
  Changes in Tax Codes: If tax codes have been changed or deleted after they were assigned to the tax determination group, this can lead to inconsistencies.
  Customizations: Custom developments or modifications in the tax determination logic may lead