How To Fix W8120 - Messages were created when checking the expression -> see log

SAP Error Message - Details

• Message type: E = Error

• Message class: W8 - Workflow: Expressions, data flow

• Message number: 120

• Message text: Messages were created when checking the expression -> see log

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.

What else can you do?

First, use our AnswerBot below to get a possible cause and solution (requires a premium subscription).

Also, review the in-depth Common Questions & Answers listed below; you could discover a solution there or be able to connect with others who have faced similar challenges.

You can also try searching the SAP support portal (support.sap.com) but you need a special user ID to access it. It is possible that an SAP support note exists that provides additional details about the mistake or even steps for fixing it.

Smart SAP Assistant

• What is the cause and solution for SAP error message W8120 - Messages were created when checking the expression -> see log ?

  SAP Error Message:
  
  W8120 - Messages were created when checking the expression -> see log
  
  Cause:
  This warning message typically occurs during the evaluation or syntax check of an expression in SAP (for example, in conditions, formulas, or user-exits). It indicates that while checking the expression, one or more messages (errors or warnings) were generated and logged. The system prompts you to review the detailed log to understand the specific issues found in the expression.
  Common causes include:
  
  Syntax errors in the expression.
  Use of undefined variables or fields.
  Incorrect function calls or parameters.
  Logical inconsistencies or invalid references.
  Missing or incorrect data elements in the expression context.
  
  
  Solution:
  
  
  Check the Log Details:
  
  The message advises to "see log." You should look at the detailed log or trace where the expression check was performed.
  In many cases, this log is accessible via the application or transaction where the expression is maintained (e.g., condition technique, pricing procedure, BRF+ rules, or custom code).
  The log will provide specific error or warning messages that pinpoint the exact problem.
  
  
  
  Analyze and Correct the Expression:
  
  Based on the log, identify syntax errors or invalid references.
  Correct any misspelled variables, incorrect function usage, or missing elements.
  Ensure all variables and fields used in the expression are properly defined and available in the context.
  
  
  
  Test the Expression:
  
  After corrections, re-check or re-validate the expression.
  Ensure no further messages are generated.
  Test the expression in the relevant business process to confirm correct behavior.
  
  
  
  Consult Documentation or SAP Notes:
  
  If the error is unclear, check SAP documentation related to the specific tool or module where the expression is used.
  Search for SAP Notes referencing message W8120 for any known issues or patches.
  
  
  
  
  Related Information:
  
  
  Where it occurs:
  
  This message is common in areas where expressions or formulas are used, such as:
  
  Pricing conditions (condition technique)
  BRF+ (Business Rule Framework plus)
  Formulas in SAP Script or Smart Forms
  User-exits or BADIs involving expression evaluation
  Workflow conditions or decision tables
  
  
  
  How to access logs:
  
  Depending on the context, logs can be found in:
  
  The application log (transaction SLG1)
  The message log in the condition maintenance screen
  BRF+ rule trace
  Debugging or trace tools
  
  
  
  Example:
  
  If you are maintaining a pricing condition formula and see W8120, check the formula syntax and variables. The log might show that a variable used in the formula is not defined, prompting you to correct it.
  
  
  
  Summary:
  
  W8120 is a warning indicating that the expression check generated messages.
  Review the detailed log to find the root cause.
  Correct syntax or logical errors in the expression.
  Re-validate and test the expression.
  Use SAP Notes and documentation for additional help.
  
  
  If you provide the specific context or the expression you are working with, I can help analyze the exact issue further.