How To Fix FKK_ID_AR101 - Could not determine account class of the contract account

FKK_ID_AR101 - Overview

• Message type: E = Error

• Message class: FKK_ID_AR - ARGENTINA: Legal report message class

• Message number: 101

• Message text: Could not determine account class of the contract account

What causes this issue?

The system uses the account class of the contract account to determine
the relevant tariff category, which is a required entry in the file
submitted to the authorities. The account class is mapped to the tariff
category in Customizing.
You do not have the account class field in your invoices, because you
have not installed or activated the IS-U component. The system therefore
cannot determine the account class.

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

System Response

The system does not generate the file.

How to fix this error?

To generate the file, you must activate the IS-U component.

Error message extract from SAP system. Copyright SAP SE.

FKK_ID_AR101 - Details

• The SAP error message FKK_ID_AR101 ("Could not determine account class of the contract account") typically occurs in the context of contract accounts in the SAP Convergent Charging or Contract Accounts Receivable and Payable (FI-CA) module. This error indicates that the system is unable to determine the account class for a specific contract account, which is necessary for processing transactions related to that account.
  Causes:
  
  Missing Configuration: The account class for the contract account may not be configured in the system. This can happen if the necessary settings in the customizing (SPRO) are not completed.
  Incorrect Account Assignment: The contract account may not be assigned to the correct account class, or the account class may not be defined for the specific type of contract account.
  Data Inconsistencies: There may be inconsistencies or missing data in the contract account master data that prevent the system from determining the account class.
  Authorization Issues: Sometimes, the user may not