How To Fix /CCIS/TAX636 - Bad expression: expression '&' in formula '&' of item '&'

SAP Error Message - Details

• Message type: E = Error

• Message class: /CCIS/TAX -

• Message number: 636

• Message text: Bad expression: 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.

To make things easier, more detailed information is frequently added to describe the issue, how to fix it, and the necessary steps or configuration modifications.

Unfortunately, there isn't any extra information in this error notice.

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Smart SAP Assistant

• What is the cause and solution for SAP error message /CCIS/TAX636 - Bad expression: expression '&' in formula '&' of item '&' ?

  The SAP error message /CCIS/TAX636 Bad expression: expression '&' in formula '&' of item '&' typically indicates that there is an issue with a tax calculation formula in the SAP system, particularly in the context of the SAP Convergent Charging (SAP CC) or SAP Convergent Invoicing (SAP CI) modules. This error suggests that there is a problem with the syntax or structure of a formula used to calculate taxes.
  Cause:
  
  Syntax Error: The formula may contain invalid syntax or characters that are not recognized by the system.
  Missing Variables: The formula might reference variables or fields that are not defined or are missing.
  Incorrect Data Types: The formula may be trying to perform operations on incompatible data types (e.g., trying to perform arithmetic on a string).
  Logical Errors: There may be logical errors in the formula that prevent it from being evaluated correctly.
  
  Solution:
  
  Review the Formula: Check the formula referenced in the error message for any syntax errors or typos. Ensure that all variables and fields used in the formula are correctly defined.
  Check Data Types: Ensure that all variables used in the formula are of the correct data type and compatible with the operations being performed.
  Test the Formula: If possible, test the formula in a controlled environment to isolate the issue. You can use simpler expressions to identify where the problem lies.
  Consult Documentation: Refer to SAP documentation or help resources for guidance on the correct syntax and structure for tax calculation formulas.
  Debugging: If you have access to debugging tools, use them to step through the formula evaluation process to identify where it fails.
  Seek Support: If the issue persists, consider reaching out to SAP support or your internal SAP team for assistance. They may have encountered similar issues and can provide insights or solutions.
  
  Related Information:
  
  SAP Notes: Check for any relevant SAP Notes that might address known issues or provide updates related to tax calculation formulas.
  Community Forums: Engage with SAP community forums or user groups where similar issues may have been discussed.
  Training Materials: Review any training materials or documentation related to SAP CC or CI that cover formula creation and tax calculations.
  
  By following these steps, you should be able to identify and resolve the issue causing the error message.