How To Fix /CCIS/TAX633 - Non-existent variable: expression '&' in formula '&' of item '&'

SAP Error Message - Details

• Message type: E = Error

• Message class: /CCIS/TAX -

• Message number: 633

• Message text: Non-existent variable: expression '&' in formula '&' of item '&'

Self-Explanatory Message

Since SAP believes that this specific error message is 'self-explanatory,' no more information has been given.The majority of messages in the SAP system have a message text, however this is frequently insufficient to comprehend or resolve the problem.

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Smart SAP Assistant

• What is the cause and solution for SAP error message /CCIS/TAX633 - Non-existent variable: expression '&' in formula '&' of item '&' ?

  The SAP error message /CCIS/TAX633 Non-existent variable: expression '&' in formula '&' of item '&' typically occurs in the context of tax calculation or configuration within the SAP system, particularly when using the SAP Convergent Charging (CC) or SAP Convergent Invoicing (CI) modules. This error indicates that there is a reference to a variable in a formula that does not exist or is not defined correctly.
  Cause:
  
  Undefined Variable: The variable referenced in the formula is not defined in the system. This could be due to a typo or because the variable was never created.
  Incorrect Formula Configuration: The formula itself may be incorrectly configured, leading to references to non-existent variables.
  Changes in Configuration: If there have been recent changes to the tax configuration or formulas, it may have led to inconsistencies or missing variables.
  Transport Issues: If the configuration was transported from one system to another (e.g., from development to production), some variables may not have been included in the transport.
  
  Solution:
  
  Check Variable Definitions: Verify that the variable referenced in the error message is defined in the system. You can do this by navigating to the relevant configuration area in SAP.
  Review Formula Configuration: Go to the formula configuration and check for any typos or incorrect references. Ensure that all variables used in the formula are correctly defined and available.
  Recreate Missing Variables: If the variable is indeed missing, you may need to create it in the system.
  Test Changes: After making any changes, test the formula again to ensure that the error is resolved.
  Consult Documentation: Refer to SAP documentation or help resources for guidance on configuring tax formulas and variables.
  Check Transport Logs: If the issue arose after a transport, check the transport logs to ensure that all necessary objects were included and correctly transported.
  
  Related Information:
  
  SAP Notes: Check SAP Notes for any known issues or patches related to this error message. SAP frequently updates its knowledge base with solutions to common problems.
  Transaction Codes: Familiarize yourself with relevant transaction codes such as OBYZ (for tax configuration) or S/4HANA transaction codes related to tax calculation.
  Community Forums: Engage with SAP community forums or user groups where similar issues may have been discussed, and solutions shared.
  
  If the problem persists after following these steps, it may be beneficial to reach out to SAP support for further assistance.