How To Fix WL121 - Expression does not have a & end character

SAP Error Message - Details

• Message type: E = Error

• Message class: WL - Workflow: run-time messages

• Message number: 121

• Message text: Expression does not have a & end character

Self-Explanatory Message

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Smart SAP Assistant

• What is the cause and solution for SAP error message WL121 - Expression does not have a & end character ?

  The SAP error message WL121, which states "Expression does not have a & end character," typically occurs in the context of SAP Web Application Server (WAS) or when working with Web Dynpro applications. This error is related to the syntax of expressions used in the application, particularly in the context of using the Web Dynpro ABAP framework.
  Cause:
  The error is usually caused by a syntax issue in the expression used in the Web Dynpro application. Specifically, it indicates that an expression is expected to end with an "&" character, which is often used in the context of concatenating strings or in certain expressions that require a specific format.
  Solution:
  To resolve this error, you can take the following steps:
  
  
  Check the Expression Syntax: Review the expression that is causing the error. Ensure that it follows the correct syntax and that all required characters, including the "&" character, are present.
  
  
  Correct Concatenation: If you are concatenating strings, make sure that you are using the "&" character correctly. For example, if you are trying to concatenate two strings, it should look like this:
  CONCATENATE string1 string2 INTO result.
  Or, if using inline expressions, ensure that the syntax is correct.
  
  
  Review Context and Data Binding: If the expression is part of a data binding or context node, ensure that the context is correctly defined and that the expression is valid within that context.
  
  
  Check for Typos: Sometimes, simple typographical errors can lead to this message. Double-check for any missing characters or incorrect syntax.
  
  
  Debugging: If the issue persists, consider using debugging tools available in the SAP environment to trace the execution and identify where the expression is failing.
  
  
  Consult Documentation: Refer to the official SAP documentation for Web Dynpro ABAP to understand the expected syntax and usage of expressions.
  
  
  Related Information:
  
  Web Dynpro ABAP Documentation: Familiarize yourself with the official SAP documentation for Web Dynpro ABAP, which provides guidelines on expressions, data binding, and syntax rules.
  SAP Community: Engage with the SAP Community forums where you can find discussions and solutions related to similar issues.
  SAP Notes: Check for any relevant SAP Notes that might address known issues or provide patches related to this error.
  
  By following these steps, you should be able to identify and correct the issue causing the WL121 error in your SAP application.