How To Fix E2191 - Constant must be enclosed in apostrophes

SAP Error Message - Details

• Message type: E = Error

• Message class: E2 - DE Data Dictionary

• Message number: 191

• Message text: Constant must be enclosed in apostrophes

What causes this issue?

You did not enclose the constant in apostrophes.

System Response

The system issues an error message and will not allow you to continue with this transaction until the error is resolved.

How to fix this error?

Enclose the constant in apostrophes. q
Example: 'Constant'

Error message extract from SAP system. Copyright SAP SE.

Smart SAP Assistant

• What is the cause and solution for SAP error message E2191 - Constant must be enclosed in apostrophes ?

  The SAP error message E2191, which states "Constant must be enclosed in apostrophes," typically occurs in ABAP programming when a constant string is not properly enclosed in single quotes. In ABAP, string literals must be enclosed in apostrophes (single quotes) to be recognized as valid string constants.
  Cause:
  The error is caused by one of the following scenarios:
  
  A string constant is missing the enclosing apostrophes.
  The string constant is incorrectly formatted, such as using double quotes instead of single quotes.
  There may be a syntax error in the code where a constant is expected but not provided correctly.
  
  Solution:
  To resolve this error, you should:
  
  Check the line of code where the error occurs.
  Ensure that all string constants are enclosed in single quotes. For example:
  
  Incorrect: DATA(my_string) = Hello World.
  Correct: DATA(my_string) = 'Hello World'.
  
  
  If you are using concatenation or other operations involving strings, ensure that all parts are properly quoted.
  
  Example:
  Here’s an example of how to correct the error:
  Incorrect Code:
  DATA(my_string) = Hello World.  " This will cause E2191
  Correct Code:
  DATA(my_string) = 'Hello World'.  " This is correct
  Related Information:
  
  ABAP Syntax Rules: Familiarize yourself with the syntax rules of ABAP, especially regarding string literals.
  Debugging: If you encounter this error, use the ABAP debugger to step through your code and identify where the issue arises.
  Documentation: Refer to the official SAP documentation for more details on string handling in ABAP.
  
  By ensuring that all string constants are properly enclosed in apostrophes, you can avoid the E2191 error and ensure your ABAP code runs smoothly.