How To Fix /CCIS/TAX635 - Infinite loop: expression '&' in formula '&' of item '&'

SAP Error Message - Details

• Message type: E = Error

• Message class: /CCIS/TAX -

• Message number: 635

• Message text: Infinite loop: expression '&' in formula '&' of item '&'

Self-Explanatory Message

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Smart SAP Assistant

• What is the cause and solution for SAP error message /CCIS/TAX635 - Infinite loop: expression '&' in formula '&' of item '&' ?

  The SAP error message /CCIS/TAX635 Infinite loop: expression '&' in formula '&' of item '&' typically indicates that there is a problem with a tax calculation formula in the SAP system, specifically within the context of the SAP Convergent Charging (SAP CC) or SAP Convergent Invoicing (SAP CI) modules. This error suggests that the system has encountered an infinite loop while trying to evaluate a formula for a specific item.
  Cause:
  
  
  Circular References: The most common cause of this error is a circular reference in the formula. This means that the formula is defined in such a way that it refers back to itself, either directly or indirectly, causing the system to enter an infinite loop during evaluation.
  
  
  Complex Formulas: If the formula is overly complex or has multiple nested expressions, it may inadvertently create a situation where the evaluation cannot be completed.
  
  
  Incorrect Configuration: There may be an issue with the configuration of the tax calculation rules or the way the formulas are set up in the system.
  
  
  Solution:
  
  
  Review the Formula: Check the formula associated with the item mentioned in the error message. Look for any circular references or dependencies that could lead to an infinite loop. Simplify the formula if possible.
  
  
  Debugging: Use debugging tools in SAP to trace the execution of the formula and identify where the loop is occurring. This can help pinpoint the exact cause of the issue.
  
  
  Test with Simplified Data: If possible, test the formula with simplified or different data to see if the error persists. This can help isolate the problem.
  
  
  Consult Documentation: Refer to SAP documentation or help resources for guidance on how to properly configure tax calculation formulas. There may be specific guidelines or best practices to follow.
  
  
  SAP Notes and Support: Check for any relevant SAP Notes that may address this specific error. If the issue persists, consider reaching out to SAP support for assistance.
  
  
  Related Information:
  
  
  SAP Convergent Charging (SAP CC): This module is used for charging and invoicing in telecommunications and utilities. Understanding how it handles formulas and calculations can be crucial for resolving this error.
  
  
  Formula Configuration: Familiarize yourself with the configuration settings for tax calculation formulas in SAP. This includes understanding how to define and manage formulas effectively.
  
  
  Testing Environment: If you have a testing environment, replicate the issue there to avoid impacting production data while troubleshooting.
  
  
  By following these steps, you should be able to identify and resolve the cause of the /CCIS/TAX635 Infinite loop error in your SAP system.